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A057713
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Smallest prime divisor of Kummer numbers ( = primorials - 1).
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6
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1, 5, 29, 11, 2309, 30029, 61, 53, 37, 79, 228737, 229, 304250263527209, 141269, 191, 87337, 27600124633, 1193, 163, 260681003321, 313, 163, 139, 23768741896345550770650537601358309, 66683, 2990092035859, 15649, 17515703, 719, 295201, 15098753, 10172884549, 20962699238647, 4871, 673, 311, 1409, 1291, 331, 1450184819, 23497, 711427, 521, 673, 519577, 1372062943, 56543, 811, 182309, 53077, 641, 349, 389
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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LINKS
| Hisanori Mishima, Factorizations of many number sequences
R. G. Wilson v, Explicit factorizations
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EXAMPLE
| 6th term in the sequence corresponds to 7th primorial=510510 and 510509=61.8369, so a(7)=61
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CROSSREFS
| Cf. A002110, A057588, A002585, A006862, A002584.
Sequence in context: A033503 A181616 A057206 * A124987 A002584 A001990
Adjacent sequences: A057710 A057711 A057712 * A057714 A057715 A057716
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KEYWORD
| nonn
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AUTHOR
| Labos E. (labos(AT)ana.sote.hu), Oct 25 2000
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EXTENSIONS
| More terms from Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Larry Reeves (larryr(AT)acm.org) and Robert G. Wilson v (rgwv(AT)rgwv.com), Apr 02 2001
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