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A098467
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Numbers n such that 9999999999999999999999988888888888888888887777777777777777766666666666665555555555544444443333322211*2^n + 1 is prime.
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0
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19, 77, 99, 135, 163, 175, 219, 249, 367, 607, 651, 1005, 1355, 1487, 2341, 5509, 8667
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| 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
| Cf. A098466.
Sequence in context: A159997 A073566 A041698 * A041700 A132234 A074822
Adjacent sequences: A098464 A098465 A098466 * A098468 A098469 A098470
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KEYWORD
| nonn
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AUTHOR
| Pierre CAMI (pierre-cami(AT)bbox.fr), Sep 09 2004
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