The nth Prime Page will now find any of the first 2.623˙10^{15} primes or
π(x) for x up to 10^{17}.

The smallest number such that (n - 3, n - 5, n - 17, n - 257, n - 65537) are all primes. Note that 3, 5, 17, 257 and 65537 are the known Fermat primes. [Russo]

To link to this page use /curios/page.php?number_id=1172