#math trivia for #September11: #254 is the product of a prime and a Mersenne prime. What are the primes? — Burt Kaliski Jr. (@modulomathy) September 11, 2013 A Mersenne prime is a prime p that has the form p = 2q-1 where q is also prime. The prime factors of 254 are 2 and 127. … Continue reading