1171

This number is a prime.

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1171, the 1171st Sophie Germain prime (99839), and the sum of the first 1171 Sophie Germain primes (52055046) have no digits in common with each other. Is there a larger example with this property? [Gaydos]

Submitted: 2020-06-27 18:07:29;   Last Modified: 2020-06-27 18:20:14.
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