37

This number is a prime.

Just showing those entries submitted by 'Gaydos': (Click here to show all)

+ The smallest positive integer that is never prime when followed by a string of ones, i.e., 371, 3711, 37111, 371111, ... are all composite numbers for any number of ones. [Gaydos]

+ 37 is the maximum sum of digits for a distinct digit cube (76^3, 289^3, and 319^3). It is also the maximum sum of digits for a distinct digit fourth power (44^4). [Gaydos]

(There are 7 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