9988
This number is a composite.
The number of prime knots with 13 crossings: 9988 = 2^2 * 11 * 227, so 13 is the sum of two smaller unique prime factors. [Post]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell
This number is a composite.
The number of prime knots with 13 crossings: 9988 = 2^2 * 11 * 227, so 13 is the sum of two smaller unique prime factors. [Post]