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A070181
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Primes p such that x^4 = 2 has a solution mod p, but x^(4^2) = 2 has no solution mod p.
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2
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113, 281, 353, 577, 593, 617, 1033, 1049, 1097, 1153, 1193, 1201, 1217, 1249, 1481, 1553, 1601, 1753, 1777, 1889, 2129, 2273, 2281, 2393, 2473, 2689, 2833, 2857, 3049, 3089, 3121, 3137, 3217, 3313, 3361, 3529, 3673, 3761, 3833, 4001, 4049, 4153, 4217
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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PROG
| (PARI) forprime(p=2, 4250, x=0; while(x<p&&x^4%p!=2%p, x++); if(x<p, y=0; while(y<p&&y^(4^2)%p!=2%p, y++); if(y==p, print1(p, ", "))))
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CROSSREFS
| Cf. A040098, A045315, A045316, A059667, A070179, A070180, A070182 - A070188.
Sequence in context: A142917 A142947 A142641 * A001134 A070188 A059331
Adjacent sequences: A070178 A070179 A070180 * A070182 A070183 A070184
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KEYWORD
| nonn
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AUTHOR
| Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Apr 29 2002
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