4159

+ 41592 - 1 is one of Ramanujan's highly composite numbers. Note that the famous Hardy-Ramanujan number (1729) is the first four digits of 41592. [Gupta]

+ The arithmetic mean of the two successive Mersenne primes 2^7-1 and 2^13-1. It is the largest known prime with this property. [Earls]

+ The first 4-digit prime to occur in the decimal expansion of π. [Loungrides]

(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=2173
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell