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A070519
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Cyclotomic[n,n] (i.e. the value of n-th cyclotomic polynomial at n) is a prime number.
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5
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2, 3, 4, 6, 10, 12, 14, 19, 31, 46, 74, 75, 98, 102, 126, 180, 236, 310, 368, 1770, 1858, 3512, 4878, 5730, 7547, 7990, 8636, 9378, 11262
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| These are probable primes for n > 1770. When n is prime, then the solutions are given in A088790.
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LINKS
| Eric Weisstein's World of Mathematics, Cyclotomic Polynomial
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MATHEMATICA
| Do[s=Cyclotomic[n, n]; If[PrimeQ[s], Print[n]], {n, 2, 256}]
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CROSSREFS
| Cf. A070518, A070520, A088790 ((n^n-1)/(n-1) is prime), A088817 (cyclotomic(2n, n) is prime), A088875 (cyclotomic(n, -n) is prime).
Sequence in context: A187966 A191149 A122907 * A177913 A098392 A076850
Adjacent sequences: A070516 A070517 A070518 * A070520 A070521 A070522
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KEYWORD
| nonn
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AUTHOR
| Labos E. (labos(AT)ana.sote.hu), May 02 2002
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EXTENSIONS
| More terms from T. D. Noe (noe(AT)sspectra.com), Oct 17 2003
a(29) from Charles R Greathouse IV, May 05, 2011
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