123 Prime square remainders.sf

#!/usr/bin/ruby

# Author: Trizen
# Date: 17 August 2016
# Translated: 16 November 2023
# https://github.com/trizen

# https://projecteuler.net/problem=123

# Runtime: 0.504s

var n = 7037

for (var p = nth_prime(n); true; (p.next_prime!; ++n)) {

    var s = p.sqr
    var r = addmod(powmod(p-1, n, s), powmod(p+1, n, s), s)

    if (r > 1e10) {
        say n
        break
    }
}