10000...38979 (100-digits)
This number is a prime.
1000000000 0000000000 0000000000
0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0007538979
1099 + 7538979 is the smallest one hundred-digit prime with the first digit being equal to preceding gap and the last digit being equal to following gap. [Kulsha]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell