139717391739171397

This number is a prime.

                                                         13971739 1739171397

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A carousel (or merry-go-round) prime, i.e., for each digit 1->3->7->9->1: 139717391739171397, 371939713971393719, 793171937193717931, 917393179317939173. Note that each of the four are emirps. Found by Giuliano Daddario, 2001. [Rivera]

Submitted: 2018-07-30 12:02:33;   Last Modified: 2019-01-28 20:44:41.
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