68000...00009 (139-digits)
This number is a prime.
680000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000000
0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000009
Smallest holey prime of the form 68*10^n+9. [Honaker]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell