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A098566
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Smallest prime P such that P# - Mersenne-prime(n) is prime.
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2
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3, 5, 7, 7, 13, 17, 19, 29, 53, 157, 79, 101, 613, 641, 2633, 2161, 1697, 2293, 12251, 4283, 7573, 7243, 9433, 22381, 29411, 16333
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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MATHEMATICA
| mexp = {the list in A000043}; Primorial[n_] := Product[ Prime[i], {i, n}]; f[n_] := Block[{k = 1}, While[Primorial[k] < 2^mexp[[n]] || !PrimeQ[ Primorial[k] - 2^mexp[[n]] + 1], k++ ]; Prime[k]]; Table[ f[n], {n, 15}] (from Robert G. Wilson v Sep 28 2004)
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CROSSREFS
| Cf. A098567.
Sequence in context: A037464 A060265 A172365 * A006540 A099726 A202664
Adjacent sequences: A098563 A098564 A098565 * A098567 A098568 A098569
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KEYWORD
| more,nonn
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AUTHOR
| Pierre CAMI (pierre-cami(AT)bbox.fr), Sep 15 2004
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EXTENSIONS
| Corrected by Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 28 2004
a(19)-a(26) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Feb 22 2008
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