1241111124211111421
This number is a prime.
124111112 4211111421
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The largest known (as of Feb 2002) palindromic prime such that the square of the sum of digits is equal to the product of digits. [Russo]
Submitted: 2002-02-22 17:32:56; Last Modified: 2008-01-30 17:28:00.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell