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Forum: Dobri 2021-08-28, 23:32
Replies: 21
Views: 4,042
Posted By Dobri
x11 - 1 = (x - 1)(x10 + x9 + x8 + x7 + x6 + x5 +...

x11 - 1 = (x - 1)(x10 + x9 + x8 + x7 + x6 + x5 + x4 + x3 + x2 + x + 1)
https://mathworld.wolfram.com/GeometricSeries.html
https://www.wolframalpha.com/input/?i=x%5E11-1
Forum: Dobri 2021-08-28, 23:15
Replies: 21
Views: 4,042
Posted By Dobri
Thank you for providing a link to a previous...

Thank you for providing a link to a previous thread, of which I was unaware about, discussing this matter.
I did not intend to create a separate thread or provide extensive details on a work in...
Forum: Dobri 2021-08-28, 21:17
Replies: 21
Views: 4,042
Posted By Dobri
Or 3. The factors could be used indirectly in the...

Or 3. The factors could be used indirectly in the design and testing of the heuristic sieve.
Every heuristic initially has an element of wizardry though.
Forum: Dobri 2021-08-28, 20:09
Replies: 21
Views: 4,042
Posted By Dobri
Same here. Only the first line of my previous...

Same here. Only the first line of my previous response was concerned with your comment concerning the homogeneous version of the geometric sum formula.
The rest of said response was an illustrative...
Forum: Dobri 2021-08-28, 18:30
Replies: 21
Views: 4,042
Posted By Dobri
Obviously, it stems from the observation that...

Obviously, it stems from the observation that 1276 = 4⋅11⋅29. You assume the worst in others.
One should not forget to be polite and respectful to the ones who attempt to communicate instead of...
Forum: Dobri 2021-08-28, 17:50
Replies: 21
Views: 4,042
Posted By Dobri
I am experimenting with heuristic sieves. One of...

I am experimenting with heuristic sieves. One of the heuristics attempts to use the known small factors of 2p-1-1.
Interestingly, in the case of p = 1277, there is a plenty of factors of 2p-1-1.
Forum: Dobri 2021-08-28, 15:20
Replies: 21
Views: 4,042
Posted By Dobri
Post "I am experimenting with heuristic sieves."

21277 - 1 = 1 + 2⋅3⋅5⋅23⋅59⋅89⋅233⋅397⋅683⋅1103⋅1277⋅2089⋅2113⋅18503⋅64439⋅181193⋅3033169⋅107367629⋅...
https://en.wikipedia.org/wiki/Fermat%27s_little_theorem
Showing results 1 to 7 of 7

 
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