68987843381

This number is a prime.

6 8987843381

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68987843381 = S(1) is an odd prime and S(n+1) = S(n)^2 - 2 produces primes for n = 2 to 7. By D. Kamanetski. [Rivera]

Submitted: 2020-06-15 00:56:36; Last Modified: 2020-06-15 01:10:39.