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 Showing results 1 to 25 of 1000 Search took 0.45 seconds. Search: Posts Made By: Batalov
 Forum: Miscellaneous Math 2022-08-16, 22:26 Replies: 10 Views: 147 Posted By Batalov P.S. (which is a bit different and deserves a... P.S. (which is a bit different and deserves a separate post) Phi(3*p,b) is also easily shown to be identical to Phi(3,b^p), which in turn is frequently 'simplified' to avoid Phi() b2p + bp + 1....
 Forum: Miscellaneous Math 2022-08-16, 22:03 Replies: 10 Views: 147 Posted By Batalov I vaguely remember coding something into a patch... I vaguely remember coding something into a patch to P95 (and then George vetted it and merged it to the trunk). The idea was to simplify the "task description". But I think it was only for...
 Forum: Miscellaneous Math 2022-08-16, 15:50 Replies: 10 Views: 147 Posted By Batalov Found a newer, larger one (was not in factorDB... Found a newer, larger one (was not in factorDB and big enough for PRPtop) - (1126^24649-1)/(1126^157-1) (http://factordb.com/index.php?id=1100000003846934287) (74739 digits)
 Forum: Miscellaneous Math 2022-08-14, 21:26 Replies: 10 Views: 147 Posted By Batalov There are some larger ones, e.g.: ... There are some larger ones, e.g.: (130^6889-1)/(130^83-1) (http://factordb.com/index.php?id=1100000002319379461) and (200^10201-1)/(200^101-1)...
 Forum: Miscellaneous Math 2022-08-14, 20:29 Replies: 10 Views: 147 Posted By Batalov One specific case of cyclotomic. Phip^2(2), or... One specific case of cyclotomic. Phip^2(2), or equivalently, Phip(2p): A156585 Also with generalization, Phip(ap), where a>2, will produce some hits. For any interestingly large numbers, - No....
 Forum: Forum Feedback 2022-08-14, 17:25 Replies: 39 Views: 960 Posted By Batalov In short, you declare once again (and done plenty... In short, you declare once again (and done plenty before) that you have no understanding of the words "intellectual property", "copyright", "license (https://ellipsa.eu/public/misc/license.html)" *,...
 Forum: FactorDB 2022-08-13, 22:19 Replies: 573 Views: 108,505 Posted By Batalov Syd (the DB owner) has various limits for his... Syd (the DB owner) has various limits for his available resources. This one is above the limit (it would eat up more CPU time, that he has). N+1 proof doesn't error - it rejects with the message...
 Forum: Aliquot Sequences 2022-08-05, 01:30 Replies: 3,699 Views: 443,278 Posted By Batalov Taking 199152 Taking 199152
 Forum: Lounge 2022-08-04, 05:37 Replies: 119 Views: 7,270 Posted By Batalov too easy! too easy!
 2022-08-04, 01:37 Replies: 49 Views: 10,677 Posted By Batalov Should this sequence be finite or infinite? ... Should this sequence be finite or infinite? [/QUOTE] I have concerns about your reading comprehension. Maybe A355956 tells something on this subject? Ah... wait...!
 Forum: FactorDB 2022-08-04, 01:32 Replies: 573 Views: 108,505 Posted By Batalov It's not just you! factordb.com... It's not just you! factordb.com (https://downforeveryoneorjustme.com/factordb.com) is down.
 2022-08-02, 22:59 Replies: 49 Views: 10,677 Posted By Batalov {parody of some folks' posts} But... but.. if... {parody of some folks' posts} But... but.. if you sum up 1000007396's digits you will get 26. Therefore, the digital root is 8. If you take the digital root of p(1000007396) you will also get 8....
 Forum: Proth Prime Search 2022-08-01, 16:08 Replies: 16 Views: 3,051 Posted By Batalov 19061965*2^1840922+1 is prime :rolleyes: 19061965*2^1840922+1 is prime :rolleyes:
 Forum: NFS@Home 2022-07-31, 17:36 Replies: 106 Views: 6,713 Posted By Batalov 2,1416+ is done 2,1416+ cofactor = p110 factor: 32312139386459660237589835506395782331854721499061954474461527504052156188529138203172395312834444925463648513 p132 factor:...
 Forum: Software 2022-07-30, 18:20 Replies: 663 Views: 58,139 Posted By Batalov Because such FFT doesn't exist. FFT are... Because such FFT doesn't exist. FFT are implemented for a certain list of sizes. In vicinity of "122" there are: 120, 128, 144 and so on. Longer answer: "still why not 122?" Because FFT is an...
 Forum: Lounge 2022-07-27, 23:15 Replies: 13 Views: 313 Posted By Batalov = =
 Forum: Chess 2022-07-26, 17:53 Replies: 5 Views: 357 Posted By Batalov bAdqazixuRY bAdqazixuRY
 Forum: Lounge 2022-07-25, 21:12 Replies: 1,973 Views: 237,185 Posted By Batalov Paul Sorvino... Paul Sorvino (https://www.bbc.com/news/world-us-canada-62296883), actor
 Forum: Linux 2022-07-25, 10:07 Replies: 21 Views: 566 Posted By Batalov echo wc -l a wc -l b |awk '{print $1*100/$3... echo wc -l a wc -l b |awk '{print $1*100/$3 "%"}'
 Forum: Chess 2022-07-23, 21:43 Replies: 4 Views: 164 Posted By Batalov GM Magnus Carlsen's abdication https://www.chess.com/news/view/carlsens-abdication-reactions-from-the-chess-world ______________ * just in case, unrelated note: the last name Nepomniachtchi (Непо́мнящий) is a nice inside joke;...
 2022-07-21, 11:51 Replies: 49 Views: 10,677 Posted By Batalov p(19439060)... p(19439060) (http://factordb.com/index.php?id=1100000003809020989) and p(19439060)+4 (http://factordb.com/index.php?id=1100000003809021930) are cousin primes. Work in progress: A355956 = 3, 5, 6,...
 Forum: Miscellaneous Math 2022-07-20, 22:46 Replies: 27 Views: 1,233 Posted By Batalov Re: 32 bits, and later 64 bit limit, and then higher. Every road begins with a few first steps. Just to give you, perhaps, a sandwich for the road (because this road is long), there are certain elements that can be used for 1) prototyping, 2)...
 Forum: Miscellaneous Math 2022-07-19, 06:18 Replies: 27 Views: 1,233 Posted By Batalov How about this, straight from Wikipedia (with... How about this, straight from Wikipedia (with pseudocode changed into python): def is_pow_onemod_fromWiki(P,D): # return true if 2^Mp = 1 (mod D) x=2 y=1 while (P > 1): ...
 Forum: Miscellaneous Math 2022-07-18, 10:06 Replies: 27 Views: 1,233 Posted By Batalov There is nothing that needs explaining. You are... There is nothing that needs explaining. You are implementing exponentiation by millions of multiplications. Instead, this method (https://en.wikipedia.org/wiki/Exponentiation_by_squaring) exists...
 Forum: NFS@Home 2022-07-17, 20:32 Replies: 106 Views: 6,713 Posted By Batalov In LA now. (Good dataset, 30M matrix.) ETA ~2... In LA now. (Good dataset, 30M matrix.) ETA ~2 weeks.
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