444444

This number is a composite.

+ The smaller of two 6-digit repdigit numbers such that the product of itself and all truncations of itself plus one is prime, i.e., 444444*44444*4444*444*44*4+1=6859617106413367297. The other is 666666. [Loungrides]

+ The only repdigit number consisting of n 4’s, (n=6), such that the product of itself and all truncations of itself plus one is a non-titanic prime. [Loungrides]

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