123479

This number is a prime.

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The smallest prime formed from all of the positive digits that are expressible as sum of two triangular numbers in exactly one way. [Honaker]

Submitted: 2010-01-12 13:15:09;   Last Modified: 2017-04-23 10:08:08.
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell