19991
This number is a prime.
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The larger of the only two five-digit palindromic primes
formed from two primes (19 and 991), one of which is the
sum of the digits of the other. [Silva]
Submitted: 2008-10-06 19:31:08; Last Modified: 2008-10-06 19:35:26.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell