121392937879

This number is a prime.

12 1392937879

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The only prime concatenated from all the emirps (1213, 7879, 9293) that are formed by concatenating in ascending order two consecutive double-digit numbers. [Loungrides]

Submitted: 2010-02-03 07:59:52; Last Modified: 2010-02-04 01:47:35.