1207

This number is a composite.

+ The second smallest semiprime whose factors (17 and 71) form a pair of emirps. [Toews]

+ The greatest common divisor of the 2nd and 3rd smallest Carmichael numbers of order 2, namely 39671149333495681 and 842526563598720001. [Hasler]

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