61119109
This number is a prime.
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The smallest invertible prime obtained by concatenating
first n invertible primes, (n=3), alternately right and
left of a single digit 1: {61||1||19||109}. [Bajpai]
Submitted: 2020-03-17 19:51:53; Last Modified: 2020-03-17 19:58:55.
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