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 Showing results 1 to 25 of 1000 Search took 0.17 seconds. Search: Posts Made By: MattcAnderson
 Forum: MattcAnderson 2022-12-02, 06:05 Replies: 2 Views: 470 Posted By MattcAnderson I was wrong. See maple worksheet showing that ... I was wrong. See maple worksheet showing that the 19-tuple 622803914376064301858782434517+d is prime for d in [0, 4, 6, 10, 12, 16, 24, 30, 34, 40, 42, 46, 52, 54, 60, 66, 70, 72, 76] Have a...
 Forum: Puzzles 2022-11-20, 01:52 Replies: 66 Views: 2,770 Posted By MattcAnderson (2*10^n - 11)/9 is a prime number for n=4, 18,... (2*10^n - 11)/9 is a prime number for n=4, 18, 100, 121, ... so the number 2221 is a prime number as well as others. Cheers
 Forum: Puzzles 2022-11-17, 23:56 Replies: 66 Views: 2,770 Posted By MattcAnderson I task myself to find prime numbers of the form... I task myself to find prime numbers of the form 222...21 or 222...27 See Maple output.
 Forum: MattcAnderson 2022-11-17, 21:40 Replies: 31 Views: 2,159 Posted By MattcAnderson I found a thing Since I have a handy dandy tool that can deal with large integers (Maple Software) I have found a 121 digit prime. > temp :=...
 Forum: MattcAnderson 2022-11-17, 15:20 Replies: 31 Views: 2,159 Posted By MattcAnderson Primes as not a possible numerical anagram ...... Primes as not a possible numerical anagram ... interesting Here is some simple minded Maple code. The hardest part was counting all the 2s. > for a from 2 by 2 to 100 do if...
 Forum: MattcAnderson 2022-11-04, 06:32 Replies: 21 Views: 2,850 Posted By MattcAnderson more factordb.com exercises Hi all, thought I would document some excercises for factordb.com tonight. These are composite numbers without known factors, that is, until I find those factors. Seems like an unending quest for...
 Forum: Homework Help 2022-09-22, 21:28 Replies: 4 Views: 1,507 Posted By MattcAnderson Also, I did a Google search for "CDF normal... Also, I did a Google search for "CDF normal distribution" I got this link https://www.probabilitycourse.com/chapter4/4_2_3_normal.php Have a nice day. Matt
 Forum: Homework Help 2022-09-22, 18:23 Replies: 4 Views: 1,507 Posted By MattcAnderson Hi Sticky and others, A Gaussian... Hi Sticky and others, A Gaussian distribution, or bell curve can be characterized by two variables. First is its mean, or center value. Second is its standard distribution, or wideness. See...
 Forum: MattcAnderson 2022-09-18, 01:15 Replies: 0 Views: 226 Posted By MattcAnderson Fibonacci doubling expression Many of us are familiar with the Fibonacci sequence. It is defined as F(n) = F(n-1) + F(n-2) with F(1) = 1 and F(2) = 1. The Lucas has the same recurrence relation, with initial conditions of...
 Forum: MattcAnderson 2022-09-17, 04:01 Replies: 1 Views: 266 Posted By MattcAnderson Stand-Up Math{s} Hi again all, Matt Parker has a YouTube channel called standupmaths. It is entertaining to me. Do a YouTube.com search for standupmaths if you are interested. In America we say 'math'. In parts...
 Forum: Information & Answers 2022-08-29, 02:24 Replies: 40 Views: 4,767 Posted By MattcAnderson Admissable prime k-tuple checker Hi all, I found a web-page that seems to be germane to this discussion. Chris Caldwell has his 'prime pages' with University of Tennessee at Martin. see this link. ...
 Forum: Lounge 2022-08-19, 04:16 Replies: 27 Views: 5,734 Posted By MattcAnderson Hi again friends and everyone, I enjoy reading... Hi again friends and everyone, I enjoy reading and posting at mersenneforum.org and participating in distributed computing projects. I live in Keizer, Oregon, USA. I'm a Navy Veteran, retired...
 Forum: MattcAnderson 2022-08-16, 20:20 Replies: 2 Views: 470 Posted By MattcAnderson 19- tuple search There is, currently, no known 19-tuple with pattern [0, 4, 6, 10, 12, 16, 24, 30, 34, 40, 42, 46, 52, 54, 60, 66, 70, 72, 76] I wrote some attached search code, but I think it is too slow. from...
 Forum: Information & Answers 2022-08-16, 09:41 Replies: 40 Views: 4,767 Posted By MattcAnderson I don't know of a good software for searching for k-tuples I wrote some Maple code to find the smallest few k-tuples for k= 7,8,9,10,11,12,13. back in 2015 My Maple code and some prime k-tuples appear in OEIS.org Dana Jacobsen and Norman Luhn have...
 Forum: MattcAnderson 2022-07-20, 17:14 Replies: 21 Views: 2,850 Posted By MattcAnderson today's factordb session Today I learned that (10^79-253653)*(1/63408193995913273) <63> equals 1240407261075014928350683*127142374043023096518690934457531891833 in other words, we start with a Composite number (C) and...
 Forum: sweety439 2022-07-20, 17:12 Replies: 9 Views: 1,141 Posted By MattcAnderson Interesting observation Sweety439. Have a... Interesting observation Sweety439. Have a nice day. Matt
 Forum: MattcAnderson 2022-07-18, 08:34 Replies: 160 Views: 58,278 Posted By MattcAnderson There is an oeis sequence for the densest... There is an oeis sequence for the densest k-tuples (or width of prime constellations). See oeis.org/A8407 pairs have minimum separation 2 so twin primes 3-tuples have pattern (0,2,6) or (0,4,6) so...
 Forum: Math 2022-07-18, 08:10 Replies: 2 Views: 882 Posted By MattcAnderson The bounded gaps between primes theorem can be... The bounded gaps between primes theorem can be seen here. https://asone.ai/polymath/index.php?title=Bounded_gaps_between_primes The best result is that there are an infinite number of pairs of...
 Forum: MattcAnderson 2022-07-10, 02:49 Replies: 31 Views: 2,159 Posted By MattcAnderson appreciate your efforts appreciate your efforts
 Forum: MattcAnderson 2022-07-10, 01:42 Replies: 15 Views: 12,115 Posted By MattcAnderson check it out https://oeis.org/A000062 This... check it out https://oeis.org/A000062 This one involves a Beatty sequence Betty :--( Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!) A000064 Partial sums of...
 Forum: MattcAnderson 2022-07-10, 01:12 Replies: 15 Views: 12,115 Posted By MattcAnderson the oeis.org is interesting A look A52 is also an excelent one. It involves alphabetical order. https://oeis.org/A000052 Cheers
 Forum: MattcAnderson 2022-07-10, 00:58 Replies: 31 Views: 2,159 Posted By MattcAnderson Sounds good smile Sounds good smile
 Forum: sweety439 2022-07-10, 00:25 Replies: 1 Views: 299 Posted By MattcAnderson All possible Have a nice day In my world,... All possible Have a nice day In my world, conjecture is like probably true
 Forum: MattcAnderson 2022-07-10, 00:25 Replies: 31 Views: 2,159 Posted By MattcAnderson All possible Have a nice day In my world,... All possible Have a nice day In my world, conjecture is like probably true
 Forum: MattcAnderson 2022-07-09, 20:33 Replies: 31 Views: 2,159 Posted By MattcAnderson Have a nice day Have a nice day
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