5.5

This number is neither prime nor composite.

+ In 1992, Heath-Brown proved prime(k) < k^5.5 < k^L, where L is an absolute constant which is now called Linnik's constant. [Post]

To link to this page use /curios/page.php?number_id=9771
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell