30000001
This number is a prime.
(29999999, 30000001) is the largest known near-repdigit twin pair of the form k * 10n ± 1, where k < 10. [Kulsha]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell
This number is a prime.
(29999999, 30000001) is the largest known near-repdigit twin pair of the form k * 10n ± 1, where k < 10. [Kulsha]