mersenneforum.org Does this result elate that the number is not a Mersenne Prime?
 Register FAQ Search Today's Posts Mark Forums Read

 2020-12-12, 03:03 #1 ONeil   Dec 2017 111100002 Posts Does this result elate that the number is not a Mersenne Prime? Result: NF-PM1 B1=728000 Is the above a residue which means the number is not a Mersenne Prime? Or just No Factor from some tested range?
 2020-12-12, 03:23 #2 ONeil   Dec 2017 24·3·5 Posts GIMPS NF-PM1 no factors by P-1 needs more testing
 2020-12-12, 03:24 #3 Uncwilly 6809 > 6502     """"""""""""""""""" Aug 2003 101×103 Posts 224278 Posts That is not a residue. That is a result. Also it shows that you may not have given Prime95 enough memory. A B1 and no B2 looks not so good. NF = No Factor found That does not mean that the number is or is not a Mersenne Prime. And since you failed to include the exponent, it is hard to tell you much else.
 2020-12-12, 03:25 #4 ONeil   Dec 2017 24·3·5 Posts Also I'm running an LL on a number right now if it hits a Mersenne Prime will I get the credit by finding it even tho other people in the past tested it but left the number behind?
2020-12-12, 03:26   #5
ONeil

Dec 2017

F016 Posts

Quote:
 Originally Posted by Uncwilly That is not a residue. That is a result. Also it shows that you may not have given Prime95 enough memory. A B1 and no B2 looks not so good. NF = No Factor found That does not mean that the number is or is not a Mersenne Prime. And since you failed to include the exponent, it is hard to tell you much else.

exponent

Last fiddled with by ONeil on 2020-12-12 at 04:04

2020-12-12, 04:02   #6
LaurV
Romulan Interpreter

Jun 2011
Thailand

24A716 Posts

Quote:
 Originally Posted by ONeil Also I'm running an LL on a number right now if it hits a Mersenne Prime will I get the credit by finding it even tho other people in the past tested it but left the number behind?
yes

2020-12-12, 04:03   #7
ONeil

Dec 2017

24×3×5 Posts

Quote:
 Originally Posted by LaurV yes
Thanks LaurV

2020-12-13, 13:14   #8
kriesel

"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest

503110 Posts

Quote:
 Originally Posted by ONeil exponent
I think the correct response would have been "the exponent". Or, you know, an actual numerical value for exponent.
Quote:
 Originally Posted by ONeil Result: NF-PM1 B1=728000 Is the above a residue which means the number is not a Mersenne Prime? Or just No Factor from some tested range?
Amazingly, the P-1 factoring result NF-PM1 B1=728000 means
no factor found, using P-1 factoring with B1=728000, and as such is inconclusive as to whether the Mersenne number on which the factoring was performed is prime or composite or Schrodinger.

Last fiddled with by kriesel on 2020-12-13 at 13:18

 2020-12-13, 13:55 #9 firejuggler     Apr 2010 Over the rainbow 2,539 Posts while a line like this Code: UID: firejuggler/Maison, M101186081 has a factor: 510212711686324010851111 (P-1, B1=729000) is a definite proof it isn't
2020-12-13, 14:47   #10
kriesel

"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest

116478 Posts

Quote:
 Originally Posted by firejuggler while a line like this Code: UID: firejuggler/Maison, M101186081 has a factor: 510212711686324010851111 (P-1, B1=729000) is a definite proof it isn't
(A verifiable factor is proof a number isn't prime) Except to a rare few: https://www.mersenneforum.org/showpo...0&postcount=79

Last fiddled with by kriesel on 2020-12-13 at 14:57

2020-12-13, 23:42   #11
Dr Sardonicus

Feb 2017
Nowhere

117B16 Posts

Quote:
 Originally Posted by kriesel (A verifiable factor is proof a number isn't prime)
1 and the number itself are verifiable factors, regardless...

 Similar Threads Thread Thread Starter Forum Replies Last Post dabaichi News 571 2020-10-26 11:02 Tamay82 Information & Answers 3 2018-09-08 16:34 aketilander Operazione Doppi Mersennes 1 2012-11-09 21:16 kurtulmehtap Math 21 2010-11-08 18:21 Unregistered Software 6 2004-06-19 08:18

All times are UTC. The time now is 19:33.

Tue Apr 20 19:33:20 UTC 2021 up 12 days, 14:14, 1 user, load averages: 2.98, 3.11, 3.21