# 2099

This number is a prime.

The next self prime year is 2099. A self number (or Columbian number) is an integer which cannot be generated by any other integer added to the sum of its digits (e.g., 25 is not a self number because 25 = 17+1+7). These were first described in 1949 by the Indian mathematician D. R. Kaprekar.

Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell