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A130433
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Even pseudoprimes to base 3.
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16
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286, 24046, 232726, 1304446, 1707266, 2232026, 3197806, 3922126, 4446982, 5603326, 5886166, 10123366, 10169926, 12304774, 13658086, 45133726, 47766286, 52249654, 62656126, 75421126, 76254046, 91459126, 91612246, 96956926, 108571606, 139868326, 151513846
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OFFSET
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1,1
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COMMENTS
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The first 27 terms (halved) are given in Table 1 by Paszkiewicz and Rotkiewicz. - R. J. Mathar, Aug 22 2012
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LINKS
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MATHEMATICA
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Do[ f=PowerMod[ 3, 2n-1, 2n ]; If[ f==1, Print[ 2n ] ], {n, 2, 7000000} ]
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PROG
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(PARI) forstep(n=4, 10^10, 2, Mod(3, n)^(n-1)==1 && print1(n, ", ")) \\ Jeppe Stig Nielsen, Apr 25 2018
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CROSSREFS
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Terms of A122780 that are congruent to 2 or 4 modulo 6.
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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