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A128121
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Numbers n such that 2^n == 5 (mod n).
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5
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OFFSET
| 1,2
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LINKS
| Joe K. Crump, 2^n mod n
OEIS Wiki, 2^n mod n
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CROSSREFS
| Cf. A015910, A036236, A050259 = numbers n such that 2^n == 3 (mod n), A033981, A051447, A033982, A051446, A033983, A128122, A128123, A128124, A128125, A128126.
Sequence in context: A155180 A182914 A203182 * A112406 A171364 A115475
Adjacent sequences: A128118 A128119 A128120 * A128122 A128123 A128124
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KEYWORD
| hard,more,nonn
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AUTHOR
| Alexander Adamchuk (alex(AT)kolmogorov.com), Feb 15 2007
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EXTENSIONS
| 1 and 3 added by N. J. A. Sloane (njas(AT)research.att.com), Apr 23 2007.
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