# 33837...42891 (56-digits)

This number is a prime.

338374 6409486665 5412810571 6448226708 1046924847 8083542891

Single Curio View: (Seek other curios for this number)

This prime starts the largest known Cunningham chain of
length 12 as of 2008: (8428860*127# + 212148902055090) *
2^n + 1, for n = 0 to 11. It also contains the largest
known chain of length 11 which was actually the goal. There
just happened to be a 12th prime. The chains are of the
second kind. [Andersen]
Submitted: 2008-05-02 07:09:05; Last Modified: 2008-06-28 14:53:25.

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