
Curios:
Curios Search:
Participate: 
This is one of only 2 fourdigit composite numbers
which, when used as "K" in Leonhard Euler's
formula for generating many primes (X^2)+X+K,
in which Euler originally used K=41,
yields more primes than composites for the
first 1,000 integer values of X. Note that the only other 4digit composite number to yield 50+% primes in Euler's formula is 6887. [Morse]
Prime Curios! © 20002018 (all rights
reserved)
