8861

This number is a prime.

Just showing those entries submitted by 'Kilpatrick': (Click here to show all)

+ The largest four-digit prime ABCD for which AB + CD, A + BCD, ABC + D, and A + B + C + D are all prime. [Kilpatrick]

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