This number is a composite.
Single Curio View: (Seek other curios for this number)656601 is the smallest Carmichael number n surrounded by a prime triplet (n-4, n-2, n+2 are all primes). [Yosei]
Submitted: 2019-07-11 06:16:02; Last Modified: 2019-07-11 07:33:53.
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