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 19:15:09; Last Modified: 2017-04-23 15:08:08.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell