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A060520
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Primes p that have at least four primitive roots that are not primitive roots mod p^2.
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2
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OFFSET
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1,1
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COMMENTS
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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.
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LINKS
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EXAMPLE
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13425, 18243, 34196, 38462, 39362 and 51787 are primitive roots mod 52517, but not mod 52517^2.
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CROSSREFS
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KEYWORD
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more,nonn
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AUTHOR
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STATUS
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approved
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