This number is a prime.

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

+ 5867 divides the concatenation of a prime p and p+1 (i.e., 211 and 212 -> 211212) a perfect square number of times. Are there other primes like 5867? [Leonardis]

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