itp – Beautiful Prime Numbers from Images

itp is a command line tool to generate large prime numbers which look like any arbitrary image.

Installation and Usage

go install[email protected]
itp [image file]


itp finds primes which look similar to an image using the following steps:

  • step 1 Convert the image into a number. Brightness chart is “7772299408”.
  • step 2 If last digit is even or 5 change it, otherwise number can’t be a prime.
  • step 3 If first digit is 0 change it. No redundant leading zeros allowed
  • step 4 Check if number is prime. If it is a prime, print it and exit.
  • step 5 If number is not prime, switch one of the digits with a similar one.
  • step 6 Goto step 4.



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