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A325885
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Bases b where exactly nine primes p with p < b exist such that p is a base-b Wieferich prime.
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9
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10768, 24599, 27557, 29957, 33301, 35397, 45009, 49085, 55241, 60661, 63290, 69389, 89101, 90607, 93657, 101305, 103751, 105657, 117618, 120473, 123824, 126449, 129473, 132857, 133524, 133948, 138149, 138896, 143882, 147717, 150793, 152985, 159317, 168920
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OFFSET
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1,1
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COMMENTS
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Numbers n such that A255920(n) = 9.
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LINKS
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PROG
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(PARI) is(n) = my(i=0); forprime(p=1, n-1, if(Mod(n, p^2)^(p-1)==1, i++)); i==9
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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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