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-   -   I guess this is OPN-related (https://www.mersenneforum.org/showthread.php?t=21898)

fivemack 2017-01-05 17:26

I guess this is OPN-related
 
factordb.com suggests that (n^61-1)/(n-1) has been carefully factored for all n<1000, though rather neglected above that value. I wonder why that was done?

R. Gerbicz 2017-01-05 17:55

[QUOTE=fivemack;450529]factordb.com suggests that (n^61-1)/(n-1) has been carefully factored for all n<1000, though rather neglected above that value. I wonder why that was done?[/QUOTE]

See here: [url]http://www.asahi-net.or.jp/~KC2H-MSM/cn/index.htm[/url]
These tables goes up to exponent=1000. Btw do you know why there is no update in the last roughly 3.5 years? (the homepage is at [url]http://www.asahi-net.or.jp/~KC2H-MSM/mathland/matha1/index.htm[/url])


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