13298267

This number is a composite.

+ Each of the 30 numbers 13298267 + 1887270 k, k=0..29 is a "semiprime" (a product of two primes). There is no longer Arithmetic Progression of semiprimes whose terms are all less than 10^8. [Hartley]

Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell