19611091991096119

This number is a prime.

                                                          1961109 1991096119

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The smallest invertible prime formed from the concatenation first 4 invertible primes 19 to 199 and down to 19 again. [Bajpai]

Submitted: 2019-02-22 14:10:39;   Last Modified: 2020-06-17 21:51:58.
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