This number is a prime.

+ The only prime less than a googol that is a reverse concatenation of the n first odd squares (n=3). [Loungrides]

+ 2591 is the smallest prime p such that p divides the numerator of the Bernoulli number B(p-17). [Luen]

+ 2591 is the (2+5+9+1)th Honaker prime. [Watson]

(There are 3 curios for this number that have not yet been approved by an editor.)

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