This number is a prime.

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The smallest prime concatenated from five distinct double-digit primes, so that deleting from the right, a double digit prime each time, remains always a prime, i.e., 11173153, 111731, 1117, 11. [Loungrides]

Submitted: 2015-01-11 09:44:50;   Last Modified: 2018-03-08 00:02:49.
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