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Search: id:A098467
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| A098467 |
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Numbers n such that 9999999999999999999999988888888888888888887777777777777777766666666666665555555555544444443333322211*2^n + 1 is prime. |
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+0
1
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| 19, 77, 99, 135, 163, 175, 219, 249, 367, 607, 651, 1005, 1355, 1487, 2341, 5509, 8667
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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9999999999999999999999988888888888888888887777777777777777766666666666665555555555544444443333322211 is a 100-digit prime that is easy to remember: 23 9 then 19 8 then 17 7 then 13 5 then 11 4 then 7 3 then 5 2 end 2 1 p(9)9 p(8)8 p(7)7 p(6)6 p(5)5 p(4)4 p(3)3 p(2)2 p(1)1
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CROSSREFS
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Cf. A098466.
Sequence in context: A159997 A073566 A041698 this_sequence A041700 A132234 A074822
Adjacent sequences: A098464 A098465 A098466 this_sequence A098468 A098469 A098470
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KEYWORD
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nonn
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AUTHOR
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Pierre CAMI (pierrecami(AT)tele2.fr), Sep 09 2004
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