606106
This number is a composite.
606106 is the 666th composite number not ending in zero
that yields a prime when turned upside down.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell
This number is a composite.
606106 is the 666th composite number not ending in zero
that yields a prime when turned upside down.