161809
This number is a composite.
A 2-sphenic number, 161809 = 43 × 53 × 71, whose inverted number (608191) is prime. [Loungrides]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell
This number is a composite.
A 2-sphenic number, 161809 = 43 × 53 × 71, whose inverted number (608191) is prime. [Loungrides]