experimental-projects/oeis-research/Lekraj Beedassy/LCM primes/lcm_p_minus_1.sf

#!/usr/bin/ruby

# Primes p such that lcm(1,2,3,...,p-2,p-1,p) - 1 is prime.
# https://oeis.org/A154524

# Found: 11059, 14281, 27277, 27803, 36497

# Last checked: 42307

for (var p = 42307; true; p.next_prime!) {
    say "Testing: #{p}"
    var c = consecutive_lcm(p)
    if (c-1 -> is_prob_prime) {
        die "Found: #{p}"
    }
}