97724...46561 (17103-digits)

This number is a prime.

Just showing those entries submitted by 'Broadhurst': (Click here to show all)

+ In April 2001, Broadhurst & de Water showed that the Fibonacci number F81839 is prime.  At that time it was the largest known prime whose proof method was "unpredictable." [Broadhurst and de Water]

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