mersenneforum.org  

Go Back   mersenneforum.org > Search Forums

Showing results 1 to 25 of 1000
Search took 0.15 seconds.
Search: Posts Made By: 3.14159
Forum: Miscellaneous Math 2018-12-17, 05:43
Replies: 3
Views: 262
Posted By 3.14159
i didn't realize that this had been so...

i didn't realize that this had been so extensively worked on. many thanks!
Forum: Miscellaneous Math 2018-12-17, 02:13
Replies: 3
Views: 262
Posted By 3.14159
base 42 project

cataloguing primes k*42n+1 for k = 1 ~ 15000, n = 1 ~ until i get bored. gotta catch 'em all, as they say.

current progress: n ~ 700

if someone's already done this, pls let me know.
...
Forum: Information & Answers 2018-12-08, 23:39
Replies: 8
Views: 694
Posted By 3.14159
well, i should have been more clear about what I...

well, i should have been more clear about what I was talking about. I meant "random" as in, something like this:

In[6]:= RandomPrime[{10^49, 10^50}]
Out[6]=...
Forum: Information & Answers 2018-12-07, 02:02
Replies: 8
Views: 694
Posted By 3.14159
records for primes

is there a list of records for the largest "random" primes ever discovered?

primes like this, for example:...
Forum: Information & Answers 2018-11-12, 00:22
Replies: 6
Views: 460
Posted By 3.14159
yeah, I made a few changes and i've got it...

yeah, I made a few changes and i've got it working now. there a way to sieve multiple ranges at a time with this or?
Forum: Information & Answers 2018-11-11, 15:13
Replies: 6
Views: 460
Posted By 3.14159
"opencl.dll is missing" guess my computer is...

"opencl.dll is missing"

guess my computer is too old or something
Forum: Information & Answers 2018-11-11, 00:17
Replies: 6
Views: 460
Posted By 3.14159
sieving software

is there an archive or repository of sieving programs? used to have a lot of them on hand, but I've totally lost all the programs I had aside from NewPGen
Forum: Miscellaneous Math 2016-12-16, 22:35
Replies: 3
Views: 453
Posted By 3.14159
something like that, yes. to clarify, it...

something like that, yes.

to clarify, it would be very nice if there were a way to get the odds of an n-digit factor being found after an amount of curves at a certain b1 (e.g. odds of finding a...
Forum: Miscellaneous Math 2016-12-16, 21:55
Replies: 3
Views: 453
Posted By 3.14159
ecm thing

I haven't been here for a while, and I couldn't find much of anything on this by searching it up, so here goes:

is there a nice way to calc the odds of finding an n-digit factor after running a...
Forum: Miscellaneous Math 2013-09-30, 21:19
Replies: 945
Views: 25,586
Posted By 3.14159
kbb-GFN: (14903*876876)^4+1 (10328 digits) ...

kbb-GFN:
(14903*876876)^4+1 (10328 digits)

Primality testing (14903*876^876)^4+1 [N-1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 5
Generic modular reduction using generic...
Forum: Miscellaneous Math 2013-09-30, 16:59
Replies: 945
Views: 25,586
Posted By 3.14159
bumping yet again with some cofactor PRPs: ...

bumping yet again with some cofactor PRPs:
((8649*157+46)*2^17090+1)/157
((9953*157+46)*2^17090+1)/157
((12728*157+46)*2^17090+1)/157

52376*1012870+1 (12875 digits)
Running N-1 test using base...
Forum: Miscellaneous Math 2013-09-25, 01:11
Replies: 945
Views: 25,586
Posted By 3.14159
Bumping: 200662*3716450+1 (25803 digits) ...

Bumping:

200662*3716450+1 (25803 digits)
Primality testing 200662*37^16450+1 [N-1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 7
Special modular reduction using zero-padded AMD K10...
Forum: Miscellaneous Math 2013-09-24, 19:42
Replies: 945
Views: 25,586
Posted By 3.14159
would do, but not havings of ecpp.

would do, but not havings of ecpp.
Forum: Lounge 2013-09-24, 19:37
Replies: 2,056
Views: 66,394
Posted By 3.14159
Losing Everyone's Valuables - Exceptionally Rare...

Losing Everyone's Valuables - Exceptionally Rare Sight

Not sure if used before: Rotate.
Forum: Miscellaneous Math 2013-09-24, 16:54
Replies: 945
Views: 25,586
Posted By 3.14159
Anyone want to prove this one for me? 14^5650 +...

Anyone want to prove this one for me?
14^5650 + 189373 is PRP, 6476 digits.
Forum: Miscellaneous Math 2013-09-24, 00:06
Replies: 945
Views: 25,586
Posted By 3.14159
Bumping with this: 5397*10!^1250+1 is 3-PRP!...

Bumping with this:
5397*10!^1250+1 is 3-PRP! (15.6527s+0.0013s) (8204 digits)
Forum: Lounge 2013-09-23, 18:42
Replies: 7
Views: 937
Posted By 3.14159
He means the largest cube solved by hand. The...

He means the largest cube solved by hand. The world record for that was set a few months ago, which stands at 111x111x111. The solve took slightly less than 30 hours' worth of solving time spaced out...
Forum: Miscellaneous Math 2013-09-23, 16:20
Replies: 945
Views: 25,586
Posted By 3.14159
About the thread's name change, I'd post...

About the thread's name change, I'd post something top5000 worthy, but I'd need to get back to you in roughly 6 ~ 10 years.
Forum: Miscellaneous Math 2013-09-23, 15:17
Replies: 945
Views: 25,586
Posted By 3.14159
moar stuff: 319629*280790+1 (24326 digits) ...

moar stuff:

319629*280790+1 (24326 digits)
Primality testing 319629*2^80790+1 [N-1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 5
Special modular reduction using all-complex AMD K10...
Forum: Lounge 2013-09-23, 12:24
Replies: 7
Views: 937
Posted By 3.14159
I use gabbasoft, this:...

I use gabbasoft, this: http://www.motus-software.com/rubix.htm, or this (for big cubes): http://advsys.net/ken/download.htm





Yeah, Verdes isn't planning on making any larger cubes than 7....
Forum: Miscellaneous Math 2013-09-23, 12:11
Replies: 945
Views: 25,586
Posted By 3.14159
moar: 93283*295606+1 (28786 digits) Primality...

moar:
93283*295606+1 (28786 digits)
Primality testing 93283*2^95606+1 [N-1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Special modular reduction using all-complex AMD K10 type-1...
Forum: Miscellaneous Math 2013-09-23, 03:10
Replies: 945
Views: 25,586
Posted By 3.14159
More primes: 80256*630766+1 (23946 digits) ...

More primes:

80256*630766+1 (23946 digits)
Primality testing 80256*6^30766+1 [N-1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 5
Special modular reduction using all-complex AMD K10...
Forum: Miscellaneous Math 2013-09-21, 18:43
Replies: 945
Views: 25,586
Posted By 3.14159
Bumping: 209610*5325760+1 (44423 digits) ...

Bumping:

209610*5325760+1 (44423 digits)
Primality testing 209610*53^25760+1 [N-1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 2
Special modular reduction using zero-padded AMD K10...
Forum: Miscellaneous Math 2013-09-20, 21:31
Replies: 945
Views: 25,586
Posted By 3.14159
Searching for a prime that's roughly ~65.5k...

Searching for a prime that's roughly ~65.5k digits in size. k * 2^217600 + 1, still sieving.

So far I've covered up to ~25.1 trillion. Started off with 300k candidates, now at a little over 11k...
Forum: Lounge 2013-09-20, 16:02
Replies: 7
Views: 937
Posted By 3.14159
cubing/15-puzzle general

Since I've been away, I've adopted cubing/solving rubik's cubes as a pastime, as well as solving 15-puzzles. My times for the 3x3x3 cube are roughly ~30 ~ 40 seconds, best time of 25.1 seconds. Not...
Showing results 1 to 25 of 1000

 
All times are UTC. The time now is 06:59.

Thu Oct 22 06:59:31 UTC 2020 up 42 days, 4:10, 0 users, load averages: 1.16, 1.15, 1.21

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.