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A038904
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Primes p such that 30 is not a square mod p.
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4
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11, 23, 31, 41, 43, 47, 53, 59, 61, 67, 73, 79, 89, 97, 109, 131, 151, 163, 167, 173, 179, 181, 193, 197, 199, 229, 251, 263, 271, 281, 283, 293, 307, 313, 317, 337, 349, 383, 401, 419, 421, 433, 439, 449, 457
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OFFSET
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1,1
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COMMENTS
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Also primes p such that p divides 6^(p-1)/2 + 5^(p-1)/2 - Cino Hilliard, Sep 06 2004
Primes p such that p divides 7^(p-1)/2 - 1. - Cino Hilliard, Sep 06 2004
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LINKS
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MATHEMATICA
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Select[Prime@Range[120], JacobiSymbol[30, #] == -1 &] (* Vincenzo Librandi, Sep 09 2012 *)
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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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