6899

This number is a prime.

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The 2nd composite-digit super prime. It is the 887th prime in the list of primes, with 887 being prime. It is the first composite-digit super prime p with the property “the index of p followed by p,” i.e., 8876899 "is also prime." [Loungrides]

Submitted: 2020-01-28 13:28:28;   Last Modified: 2020-06-27 16:10:46.
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