64079
This number is a composite.
64079 is the first Lucas number with a prime index that is composite (64079 = 139*461).
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell
This number is a composite.
64079 is the first Lucas number with a prime index that is composite (64079 = 139*461).