This number is a prime.

                                                               77 7775777777

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The larger of only two near-repdigit prime-digit primes with length (p+q) using the largest two prime digits p, q. The other one is 757777777777. [Loungrides]

Submitted: 2020-05-20 14:09:40;   Last Modified: 2020-05-20 14:22:04.
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