Tagged with 253

#math trivia #253 solution

#math trivia for #September10: #253 is the product of a Sophie Germain prime and its matching safe prime. What are the primes? — Burt Kaliski Jr. (@modulomathy) September 11, 2013 A Sophie Germain prime is a prime p with the property that 2p+1 is also prime. The prime q = 2p+1 is called the matching … Continue reading