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A109347 Zsigmondy numbers for a = 5, b = 3: Zs(n, 5, 3) is the greatest divisor of 5^n - 3^n (A005058) that is relatively prime to 5^m - 3^m for all positive integers m < n. +0
10
2, 1, 49, 17, 1441, 19, 37969, 353, 19729, 421, 24325489, 481, 609554401, 10039, 216001, 198593, 381405156481, 12979, 9536162033329, 288961, 18306583, 6125659, 5960417405949649, 346561, 103408180634401, 152787181, 3853528045489 (list; graph; listen)
OFFSET

1,1

LINKS

Eric Weisstein's World of Mathematics, Zsigmondy's Theorem

CROSSREFS

Cf. A064078-A064083, A109325, A109348, A109349.

Sequence in context: A038021 A127609 A100018 this_sequence A054210 A092650 A104024

Adjacent sequences: A109344 A109345 A109346 this_sequence A109348 A109349 A109350

KEYWORD

nonn,new

AUTHOR

Jonathan Vos Post (jvospost3(AT)gmail.com), Aug 21 2005

EXTENSIONS

Edited, corrected and extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Aug 26 2005

Definition corrected by Jerry Metzger, Nov 04 2009

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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