#math trivia for #June7:  #159 is the product of 3 and 53, two primes with the same last digit. What other day-numbers have this property? — Burt Kaliski Jr. (@modulomathy) June 8, 2012 One of the primes must be less than or equal to the square root of 366, i.e., 19 or less.  We can … Continue reading →