This number is a prime.
Single Curio View: (Seek other curios for this number)The 13th of May 2011 will be a "double Friday the 13th," i.e., the sum of the digits of 5/13/2011 equals 13. The next time this will happen in a prime year is 1/13/2141. [Caldwell]
Submitted: 2006-10-15 12:03:55; Last Modified: 2008-01-30 11:19:12.
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell