107071073099339507293

This number is a prime.

                                                     1 0707107309 9339507293

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The smallest 21-digit emirp that remains emirp after rightmost digits are omitted three at a time. [Loungrides]

Submitted: 2018-04-06 07:49:15;   Last Modified: 2018-04-06 09:44:06.
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