17971
This number is a prime.
Just showing those entries submitted by 'Silva': (Click here to show all)
The smaller of the only two five-digit palindromic primes
formed from two primes (17 and 971), one of which is the sum of
the digits of the other. [Silva]
(There is one curio for this number that has not yet been approved by an editor.)
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell