The smallest Wolstenholme prime.
Among all the primes p < 12000000, p divides the
numerator B(p-3), a Bernoulli number, only for 16843 and
2124679. Yet Jianqiang Zhao believes there exist infinitely
many such primes. [Post]
(There is one curio for this number that has not yet been approved by an editor.)
To link to this page use /curios/page.php?number_id=638