8861
This number is a prime.
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
This number is a prime.
The largest four-digit prime ABCD for which AB + CD, A +
BCD, ABC + D, and A + B + C + D are all prime. [Kilpatrick]