#math trivia for #February22: #53 is surrounded by more composites than any prime so far.  How many immediate neighbors of 53 aren’t prime? — Burt Kaliski Jr. (@modulomathy) February 22, 2012 Ten immediate neighbors of 53 aren’t prime: 48 49 50 51 52 … 54 55 56 57 58 The gaps between 47 and 53 … Continue reading →