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A129738 List of primitive prime divisors of the Jacobsthal numbers A001045 in their order of occurrence. +0
2
3, 5, 11, 7, 43, 17, 19, 31, 683, 13, 2731, 127, 331, 257, 43691, 73, 174763, 41, 5419, 23, 89, 2796203, 241, 251, 4051, 8191, 87211, 29, 113, 59, 3033169, 151, 715827883, 65537, 67, 20857, 131071, 281, 86171, 37, 109, 25781083, 1777, 524287, 22366891, 61681, 83 (list; graph; listen)
OFFSET

1,1

COMMENT

Read A001045 term-by-term, factorize each term, write down any primes not seen before.

REFERENCES

G. Everest et al., Primes generated by recurrence sequences, Amer. Math. Monthly, 11 4 (No. 5, 2007), 417-431.

K. Zsigmondy, Zur Theorie der Potenreste, Monatsh. Math., 3 (1892), 265-284.

CROSSREFS

Cf. A001045, A049883, A107036, A129733.

Sequence in context: A145398 A087322 A094747 this_sequence A105603 A122133 A065019

Adjacent sequences: A129735 A129736 A129737 this_sequence A129739 A129740 A129741

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), May 13 2007

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Last modified December 10 00:48 EST 2009. Contains 170565 sequences.


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