98579851
This number is a prime.
The largest 8-digit prime number comprised of two 4-digit consecutive primes 9857 and 9851. Interestingly, 98519857 is also prime and is formed from the same 4-digit consecutive primes. [Gupta]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell