Does this result elate that the number is not a Mersenne Prime?

ONeil · 2020-12-12, 03:03

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?

ONeil · 2020-12-12, 03:23

GIMPS NF-PM1 no factors by P-1 needs more testing

Uncwilly · 2020-12-12, 03:24

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.

ONeil · 2020-12-12, 03:25

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?

ONeil · 2020-12-12, 03:26

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

LaurV · 2020-12-12, 04:02

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

ONeil · 2020-12-12, 04:03

Quote:

Originally Posted by LaurV

yes

Thanks LaurV

kriesel · 2020-12-13, 13:14

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.

firejuggler · 2020-12-13, 13:55

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

kriesel · 2020-12-13, 14:47

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

Dr Sardonicus · 2020-12-13, 23:42

Quote:

Originally Posted by kriesel

(A verifiable factor is proof a number isn't prime)

1 and the number itself are verifiable factors, regardless...

2020-12-12, 03:03	#1
ONeil Dec 2017 2⁴×3×5 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?

2020-12-13, 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

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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 5·2,179 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?