11317379

This number is a prime.

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The smallest 8-digit prime such that any substring of length 2 (for you know 8 factors into 2 * 2 * 2, hence the 2-digit substrings) yields only distinct primes (11, 13, 31, 17, 73, 37, 79). [De Geest]

Submitted: 2002-04-17 14:20:16; Last Modified: 2008-01-30 17:28:00.