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 A126439 Least prime of the form x^n-x-1. 1
 5, 5, 13, 29, 61, 2097143, 1679609, 509, 1021, 8589934583, 4093, 67108859, 16381, 470184984569, 4294967291, 2218611106740436979, 68719476731, 1350851717672992079, 1048573, 10460353199, 4194301, 20013311644049280264138724244295359, 16777213, 108347059433883722041830239, 20282409603651670423947251285999, 58149737003040059690390159, 72057594037927931, 536870909, 999999999999999999999999999989 (list; graph; refs; listen; history; text; internal format)
 OFFSET 2,1 LINKS MATHEMATICA a = {}; Do[k = 2; While[ ! PrimeQ[k^n -k - 1], k++ ]; AppendTo[a, k^n - k - 1], {n, 2, 30}]; a (*Artur Jasinski*) CROSSREFS Cf. A002327, A002328, A116581, A126420, A126421, A126422, A126423, A126424, A126425, A126426, A126427, A126427, A126428, A126429, A126430, A126431, A126432 A126433, A126434, A126435, A126436, A126437, A126438. Sequence in context: A094904 A286456 A171663 * A318541 A076903 A192987 Adjacent sequences:  A126436 A126437 A126438 * A126440 A126441 A126442 KEYWORD nonn AUTHOR Artur Jasinski, Dec 26 2006, Jan 19 2007 STATUS approved

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Last modified April 21 12:47 EDT 2021. Contains 343153 sequences. (Running on oeis4.)