113127131137149151157

This number is a prime.

                                                     1 1312713113 7149151157

+ 113127131137149151157 is the smallest 21-digit prime formed by the concatenation of seven consecutive increasing 3-digit primes (113-127 ... 157). Note that 127131137149151157163, immediately following, is also prime. [Mortreuil]

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