190000061

This number is a prime.

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The only non-titanic strobogrammatic prime formed by inserting n zeros between 19, 61, i.e., that are the terms in ascending order of the only pair of double-digit prime rotative twins, (case n=5). [Loungrides]

Submitted: 2017-03-12 11:29:22; Last Modified: 2018-12-07 17:10:25.