mersenneforum.org Does this result elate that the number is not a Mersenne Prime?
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 2020-12-12, 03:03 #1 ONeil     Dec 2017 24010 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 252178 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

24×3×5 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

"name field"
Jun 2011
Thailand

3·23·149 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

111100002 Posts

Quote:
 Originally Posted by LaurV yes
Thanks LaurV

2020-12-13, 13:14   #8
kriesel

"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest

2·29·127 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     "Vincent" Apr 2010 Over the rainbow 22·7·103 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

2×29×127 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

2×11×283 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...

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