641491

This number is a prime.

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

+ The prime p = 641491 is the smallest known counterexample to Masley's suggestion of how one might prove Vandiver's conjecture, i.e., show that the class number h(Q(ζp + ζp-1)) is smaller than p. [Poo Sung]

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