1181

This number is a prime.

Just showing those entries submitted by 'Silva': (Click here to show all)

+ 1181 a prime whose two first digits form the number ll and whose sum digits is ll. It equals the sum of the first ll primes primes with the end-digit l. The first of these primes is ll and the last one ends in ll. [Silva]

Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell