10200...00201 (55-digits)

This number is a prime.

10200 3000400005 0000060000 0070000006 0000050000 4000300201

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Palindromic prime formed by ascending and descending concatenation of the first seven digits followed by zeros in ascending and descending number. [Silva]

Submitted: 2010-03-19 10:52:29; Last Modified: 2010-03-19 11:53:33.