1st problem – geeky.vn

the first { [ (prls6_36 – prime_36) << 7 ] – 1 } digits after decimal of Pi, in MD5

Useful links:

Other notes:

  • the first digits: notice that “digits” is in plural form. When I first read this problem, I was thinking that I only need to brute force the MD5 for 10 integers from 0 to 9, then I’d get the result.

How I solve that one? I just read the file that contains 1,000,000 digits of number after decimal of Pi, then perform a little bit of arithmetic use a library to know the MD5 of a string.