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A060518
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Primes p that have exactly two primitive roots that are not primitive roots mod p^2.
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2
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367, 863, 907, 1327, 1549, 1579, 1607, 1619, 1697, 2221, 2267, 2551, 2671, 2677, 2693, 2719, 2837, 3209, 3313, 4049, 4373, 4391, 4909, 5261, 5669, 5693, 6007, 6269, 6343, 6547, 6653, 6703, 6857, 6907, 7013, 7559, 7573, 7583, 7669, 7723, 7919
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OFFSET
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1,1
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COMMENTS
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If x is a primitive root mod prime p then either x is a primitive root mod p^2 or x has order p-1 mod p^2.
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LINKS
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EXAMPLE
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159 and 205 are primitive roots mod 367, but not mod 367^2.
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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