98765432109190123456789

This number is a prime.

987 6543210919 0123456789

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The larger of only two palindromic primes formed by inserting a 3-digit palindromic prime p between the sequences of digits in descending and in ascending order, (case p=919). [Loungrides]

Submitted: 2016-08-06 09:54:46; Last Modified: 2018-12-17 12:57:11.