7487
This number is a prime.
The largest prime p of the type p=q*R(q)-(q+R(q)) where q is a double-digit number and R(q) its reversal (case q=97). [Loungrides]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell
This number is a prime.
The largest prime p of the type p=q*R(q)-(q+R(q)) where q is a double-digit number and R(q) its reversal (case q=97). [Loungrides]