10909...90901 (33-digits)

This number is a prime.

109 0909090909 0909090909 0909090901

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A palindromic alternate-digit prime; nearly a SUPP prime except for a couple of bumps (also written as 1(09)₁₅01). [Green]

Submitted: 2009-09-15 05:20:15; Last Modified: 2009-09-15 10:47:40.