Getting this error in powershell from running pictoprime -i shapes.png

Image i tried to use: Is this an issue on my side? haven't been able to make this work on any image. Am happy to provide any additional info. Cheers

I believe the image i have is all white (960x720), and these parameters seem to cause an exception in the code:

pictoprime -i image-363.png --contrast -0.9 -s

Here is the image in case you cannot reproduce with just the details above

And here is the full output from this command:

pictoprime_install_err.txt

on win 10 pro x64. using x64 versions of node and the rest. have not tried downgrade to x32.

as far as I know all deps are installed correctly. not sure about openssl though. I installed via >choco install openssl which seemed to work fine.

what is the full command to change width and contrast? i can consistently get a 32 width prime, but I always get errors when trying to change the width.

for example, when I try "pictoprime --width = 64" then i get: Error: Either a number or an image must be specified.

i've tried pretty much every variation i can think of for denoting a number and it usually gives that error.

pictoprime --width (nothing afterwards) this will give error: option '--width ' argument missing

So i tried "pictoprime --width <64>" but that gave the following message At line:1 char:20

• pictoprime --width <64>

•                ~
  

The '<' operator is reserved for future use. + CategoryInfo : ParserError: (:) [], ParentContainsErrorRecordException + FullyQualifiedErrorId : RedirectionNotSupported

I've also tried editing the image javascript file directly but that doesn't seem to change anything. any thoughts? i've tried updating, uninstall and reinstall, nothing seems to work. The pictures look good but would like to get them a bit bigger.

very cool program by the way!

Hey so, I didn't wanna drop a report until I really hit a wall. I'm not terribly tech savvy, so it's totally possible I missed some kinda step in here, but I figured I'd ask rather than keep banging my head against a wall. I've been trying to run this program on my laptop for about two days on and off (ever since seeing the StandUpMaths video that talks about it) and I keep running into the same error. Install GraphicsMagick, node, and openssl, but it still seems to come up and I was wondering if anyone knew how to fix it. I run it in cmd and I get the same error over and over. I'll attach the screenshot with the pic I'm trying to test this on. Please let me know when you can, thanks!

I tried to run with width 80 and it took me almost 12 hours to compute. At the end I got just a parcial number:

{
  prime: '7777777777777777777777777777777777777777777777777777777777722940000000000000000000000000000000000000000000000000000000000000000004999999999999999999999999999999777777777777777777777777777777777777777777777777777777772294000000000000000000000000000000000000000000000000000090000000000000000000999999999999999999999999999977777777777777777777777777777777777777777777777777777729400000000000000000000000000000000000000000000000000000000000000000000000000000499999999999999999994999997777777777777777777777777777777777777777777777777777294000000000000000000000000000000000000000000000000000000000000000000000000000000000499999999999999999499999777777777777777777777777777777777727222222222222229940000400000000000000000000000000000000000000000000000000000000000000000000000000000000499999999999999499999977777777777777777777777777777777772222222222222294440400000000000000000000000000000000000000000000000000000000000000000000000000000000000000999999999999949999997777777777777777777777777777777772222222299922944404000000000000000000000000000000000000000088000088888888888888888880800000000000000000000004999999999994999999777777777777777777717777777777777222299999929944440000000000000000000000000000000000000000000000000000888888888888888888880000000000000000000009999999994999999977777777777777777777777777777777722999999299444440000000000000000000000000000000000000000000000000000000008888888888888888888080000000000000000099999999499999997777777777777777777777777777777772999449294444000000000000000000000000444400400444444444400000000000000000000888888888888888888880000000000000004999999999999999777777777777777777777777777777772299992994444000000000000004404444444444444444444444444444440000000000000000000888888888888888888888880000000000049999949999999977777777777777777777777777777777229992994440000000044444444444444444444444444444444444444444444444000000000000000888888888888888888888800000000004999994999999997777777777777777777777777777777729922994440000000444444444444444444444444444444444444444444444444440000000000000000888888888888888888888800000000099999999999999777777777777777777777777777777772922994440000004444444444444444444444444444444444444444444444444444000000000000000008888888888888888888888000000049999499999999977777777777777777777777777777777922994440000044444444999444444444444444444444444444444444444444444400000000000000000088888888888888888888880000009999949999999997777777777777777777777777777777222994440000444999999999999999999444444444444444444444444444444444444000004000000000000888888888888888888888880009999999999999999777777777777777777777777777777727299440000499999999999999999999999999994444444444444444444444444444444404444000000000088888888888888888888888009999999999999999977777777777777777777777777777772299440004999992229999999999999999999999999444444444444444444444444444444444444400000000888888888888888888880049999999999999999997777777777777777777777777777777299444444992222222222222999999999999999999999994444444444444444444444444444444444000000088888888888888888004999999999999999999999777777777777777777777777777777229992299922222222222222229999999999999999999999999444444444444444444444444444444444400008888888888880004999999999999999999999999977777777777777777777777777777722222229922277777222222222299999999999999999999999999999944494444444444444444444440000004088000004449999999999999999999999999999997777777777777777777777777777772922229922277777777722222229999994449999999999999944999994444444444444400000000000000000400044999999999999999999999999999999999999777777777777777777777777777777227229922777777777777722229999444444444444444994444444444444444444444400000000044444444440004999999999999999999999999999999999999977777777777777777777777777777722222992777777777777722299999994444444440004444444444444444944444444444444444444444999999400449999999999999999999999999999999999997777777777777777777777777777777722992277777777777772299222999999944444444444444444449999999999444444444444444444444499940044999999999999999999999999999999999999777777777777777777777777777777722292277777777777772222222222299999444444444444444499999999994444444400000000044444499994004999999999999999999999999999999999999977777777777777777777777777777772229227777777722222292222222229994444444444444444449999999994444440000000000440449449999400499999999999999999999999499999999999997777777777777777777777777777777222222777777772299992222299994994000000444044444444999999444400000000880000049444444499940004499999499999999999999949999999999999777777777777777777777777777227722222277777777772299229999999999940000044444444444999994999944444000000080004994444499994800499999944999999999999949999999999999977777777777777777777777777222272722277777777777772222222222299999444444444444449999992922994444444400000004444499999999404999999994404999999999994999999999999997777777777777777777777777722227222227777777777777277777722222999999444444444999999999999999944444400044444444449999999990499999999940009999999994499999999999999777777777777777777777777777227772222777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8'... 2800 more characters,
  attempts: 767,
  simultaneous: 12,
  distinctTested: 9216
}

Bummer.

I've installed prettier formatter and configured it to be as similar to this repo's primary coding style as possible, I've also run the formatter on all files and added package.json scripts for check and write (aliased as lint and format respectively).

I've added a command as a shortcut to running the index file in node.

I've tidied the JSDoc in the project by adding/modifying types where necessary, removing unused types (primarily implied return types), and adding TODO.

If possible, I would like to work on .d.ts type declaration files for the project to improve type safety as well as give users/contributors a clear view of what goes in and out of a function without having to deal with JSDoc and implementations cluttering the view.

I would also later like to work on an export option "png" which would leverage Node canvas to generate images from the prime integer, this would also open doors to color in future iterations.

I have raised issues for both of the above, give me the ok over there if you're happy for me to work on these features.

pictoprime error: Error: You must have openssl in your path for this program to work. at main (file:///C:/Users/Pepe/AppData/Roaming/npm/node_modules/pictoprime/index.js:36:84) my node.js version is v18.1.0 so thats not the issue

After some trying and problem solving I managed to get the code working to give the resulting long prime number. I was wondering if it was also supposed to give a resulting image with the numbers or is it something I should do myself? I'm not an expert so I wasn't sure. I only get the prime number.

I was of course able to make the image myself, was just wondering if there was some problem still. Very cool idea and program in any case!

I'm on Windows 11 and ran the program on the command prompt in case it matters. I have so little experience with these things that I needed to install every dependency first.

In my tests, this results in the prime searching process running approximately twice as fast. I believe this happens because:

1. A very large proportion of the candidates can be eliminated by checking them for divisibility with the first 2,000 primes.
2. Checking against the first 2,000 primes is very fast, even when single threaded in JavaScript.
3. Calling out to OpenSSL via the terminal adds considerable overhead/latency

Benchmarks on the sample image (higher is better)

The old code that always uses OpenSSL

36.7 prime candidates tested per second 37.5 prime candidates tested per second 33.7 prime candidates tested per second

My version that first checks for divisibility by small primes

60.5 prime candidates tested per second 86.5 prime candidates tested per second 95.6 prime candidates tested per second

pictoprime throws error: if (!await commandExists('openssl').then(() => true).catch(() => false)) throw new Error('You must have openssl in your path for this program to work.')

However openssl is in my path: $ which openssl /usr/bin/openssl

$ echo $PATH /home/karza/julia-1.7.1/bin:/home/karza/.cargo/bin:/home/karza/.local/bin:/home/karza/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin

Running on XUbuntu 18.04.6 LTS

I tried running pictoprime on OSX and I had this openssl installed

> openssl version
OpenSSL 1.0.2q  20 Nov 2018

which only returns the hex value and not decimal

> openssl prime 12321321                                                                                                     
BC0229 is not prime

which resulted in the ascii art to be incorrect

After I used openssl@3 it worked

> /usr/local/opt/openssl@3/bin/openssl prime 12321321                                                                                   
BC0229 (12321321) is not prime

So if anyone else runs into this issue you know how to fix it and maybe we can adjust the README to mention this.

Using the canvas npm package and the built-in node:fs module, we can write the result of a "prime" export to a virtual HTMLCanvasElement and then pipe that canvas to a file. The file size will be proportional to the configured --width, the most likely solution is a multiplier that decreases through some function as a the configured --width increases, approaching a multiplier of 1.

Please let me know if you would like this feature implemented and I will begin working on it.

The majority of packages on npm use TypeScript in some form or another, and the ones which don't have 3rd party .d.ts declaration files written over at Definitely Typed.

I would like to do one of two things;

1. Convert the project over to TypeScript
2. Write .d.ts definition files for the project

In the case of converting to TypeScript, I will pick the most forgiving compilerOptions so that someone with zero knowledge could still come to this project and contribute, esentially the only types necessary will be function parameters and placeholder variables, though type safety could still be improved with further typings such as interfaces and function generics. The project's build step will compile from a new source directory src to an output directory dist, and all pointers in package.json will be modified accordingly.

In the case of writing .d.ts declaration files, I will be doing the TypeScript compiler's job of extracting type definitions an putting them in .d.ts files. All functions and file-level variables, exported or not, will be typed, and we'll get a few useful interfaces out of it as well, which could solve some of the JSDoc spaghetti this project is beginning to run into.

Please let me know if you would like this feature implemented and I will begin working on it.

Please could somebody tell me explicitly how to use this code (in particular to convert an image into a prime)

• Do I need to save the code, its dependencies or the image I wish to convert anywhere specific?
• What should I type into node in order to run the program?
  • I've tried pictoprime -V , pictoprime -i , $ pictoprime -V etc.

This is not an issue with the code, it's an issue with my knowledge and I would really appreciate it if someone could tell me how to use it. I initially started to learn javascript (in a few spare hours) to figure out how to use this code, but it and the instructions given are just as opaque to me as they were before. Please help :)