A060520 Primes p that have at least four primitive roots that are not primitive roots mod p^2.

653, 16631, 40487, 50033, 52517, 67631, 80803, 138107, 145253, 147197

Offset: 1

Author

Jud McCranie, Mar 24 2001

Keywords

• more
• nonn

Comments

40487 is unusual - it has four primitive roots with this property (5, 5^3, 5^5, 4492) and 5 is the least positive primitive root mod 40487 - see A055578.

Examples

			13425, 18243, 34196, 38462, 39362 and 51787 are primitive roots mod 52517, but not mod 52517^2.
		

Crossrefs

Cf. A060503, A055578, A060518, A060519.