44444444

This number is a composite.

+ The only eight-digit repdigit such that the difference of all truncations of itself from itself plus one, i.e., 44444444-4444444-444444-44444-4444-444-44-4 + 1 = 39506177, is an emirp. [Bajpai]

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