987654321
This number is a composite.
987654321 +/- 2 are two consecutive primes. [Bui Quang Tuan]
KJIHGFEDCBA987654321 is a prime in base 4500. [Sairus]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Reginald McLean
This number is a composite.
987654321 +/- 2 are two consecutive primes. [Bui Quang Tuan]
KJIHGFEDCBA987654321 is a prime in base 4500. [Sairus]