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A109348 Zsigmondy numbers for a = 7, b = 3: Zs(n, 7, 3) is the greatest divisor of 7^n - 3^n that is relatively prime to 7^m - 3^m for all nonnegative integers m < n. +0
6
4, 5, 79, 29, 4141, 37, 205339, 1241, 127639, 341, 494287399, 2041, 24221854021, 82573, 3628081, 2885681, 58157596211761, 109117, 2849723505777919, 4871281, 8607961321, 197750389, 6842186811484434379, 5576881, 80962848274370701 (list; graph; listen)
OFFSET

1,1

LINKS

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

CROSSREFS

Cf. A064078-A064083, A109325, A109347, A109349.

Adjacent sequences: A109345 A109346 A109347 this_sequence A109349 A109350 A109351

Sequence in context: A013331 A042425 A105288 this_sequence A078985 A041173 A005512

KEYWORD

nonn

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

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Last modified October 15 09:18 EDT 2008. Contains 145015 sequences.


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