This number is a composite.

                                                              126 8759440032

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1268759440032 is the earliest sum S of the first k primes, that is "sandwiched" in the middle of a pair of twin primes P1 and P2. This occur for k=425373, primes go from 2 to 6196019 and the twin primes are 1268759440031 and 1268759440033. Moreover, S, P1 and P2 are pandigitals. [Rivera]

Submitted: 2020-05-28 18:25:14;   Last Modified: 2020-05-28 18:27:43.
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