fond of a factor? Urn yourself to become remains - Page 167

James Heinrich · 2021-03-18, 18:11

Quote:

Originally Posted by LaurV

Well, it could be easily checked in which class the factors were, in both cases.

3412 / 4620
52 / 420

LaurV · 2021-03-18, 18:22

So, you would get about 70% of the NF credit with mfaktc, unless you TFed the whole bit (and no "star" is sent), but you would only get about 12% of the NF credit if P95 indeed uses 420 classes. More or less, as the space between the classes is not even. Better calculus would take in consideration modularity of p to 420 and 4620 and display x/96 and x/960 respectively, instead of x/420 and x/4620. No calculation done, only arguing

the excuse is that it's 1:20 AM here. Going to bed.

Prime95 · 2021-03-18, 20:51

Quote:

Originally Posted by James Heinrich

I believe Prime95 uses 420 classes whereas mfaktx uses 4620 classes (except for the less-classes version/setting when it also uses 420).

Prime95 (and Primenet's credit calculation) uses 16 mod 120 classes.

petrw1 · 2021-03-18, 22:29

My only suggestion would be: if I TF the entire bit level regardless of the factor size I should get full credit ... because if someone later wants to find more factors they don't need to redo this bit level. Do I correctly assume mfaktc/Prime95 does not retain classes complete on a partial TF for later continuation?

James Heinrich · 2021-03-18, 22:44

Quote:

Originally Posted by petrw1

if I TF the entire bit level regardless of the factor size I should get full credit

You do (manual results form was changed several months ago to detect and handle this).

Quote:

Originally Posted by petrw1

Do I correctly assume mfaktc/Prime95 does not retain classes complete on a partial TF for later continuation?

It could in theory be derived from the result line, finding out what class the factor was found in and continuing from there. But neither software implements that.

petrw1 · 2021-03-18, 23:52

Quote:

Originally Posted by James Heinrich

You do (manual results form was changed several months ago to detect and handle this).

Jwb52z · 2021-03-19, 02:46

P-1 found a factor in stage #2, B1=743000, B2=20368000.
UID: Jwb52z/Clay, M103164703 has a factor: 10394318420108355367002377 (P-1, B1=743000, B2=20368000).

83.104 bits.

petrw1 · 2021-03-21, 23:34

28336753 F 2021-03-21 22:40 Factor: 5959592039933211534161 / TF: 72-73

LaurV · 2021-03-22, 02:52

Congrats, triple 59, next one you will find will start with a quadruple 69...

axn · 2021-03-22, 07:12

Code:

M3865481 has a factor: 93787084544353687348484146830436095506958398058547079607725479 (P-1, B1=15000000, B2=750000000)

Splits as 220078042351889861586169 x 426153756831381209955800547030419928991

petrw1 · 2021-03-27, 01:26

42651893 F-PM1 Factor: 1627638207025330060517196929537 / (P-1, B1=1500000, B2=45000000)

https://www.mersenne.ca/exponent/42650347

2021-03-21, 23:34	#1834
petrw1 1976 Toyota Corona years forever! "Wayne" Nov 2006 Saskatchewan, Canada 2²·7·167 Posts	Starts with 595959 28336753 F 2021-03-21 22:40 Factor: 5959592039933211534161 / TF: 72-73

2021-03-22, 07:12	#1836
axn Jun 2003 5051₁₀ Posts	Another nice composite Code: M3865481 has a factor: 93787084544353687348484146830436095506958398058547079607725479 (P-1, B1=15000000, B2=750000000) Splits as 220078042351889861586169 x 426153756831381209955800547030419928991

2021-03-27, 01:26	#1837
petrw1 1976 Toyota Corona years forever! "Wayne" Nov 2006 Saskatchewan, Canada 2²·7·167 Posts	124 bits 42651893 F-PM1 Factor: 1627638207025330060517196929537 / (P-1, B1=1500000, B2=45000000) https://www.mersenne.ca/exponent/42650347

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
A new factor of F11?!	siegert81	FermatSearch	2	2018-01-24 04:35
A fond farewell	rogue	Lounge	10	2008-11-21 05:25
who can factor 10^100+27?	aaa120	Factoring	17	2008-11-13 19:23
New factor	fivemack	ElevenSmooth	4	2008-05-07 19:28
Shortest time to complete a 2^67 trial factor (no factor)	dsouza123	Software	12	2003-08-21 18:38

2021-03-18, 18:22	#1828
LaurV Romulan Interpreter Jun 2011 Thailand 9611₁₀ Posts	So, you would get about 70% of the NF credit with mfaktc, unless you TFed the whole bit (and no "star" is sent), but you would only get about 12% of the NF credit if P95 indeed uses 420 classes. More or less, as the space between the classes is not even. Better calculus would take in consideration modularity of p to 420 and 4620 and display x/96 and x/960 respectively, instead of x/420 and x/4620. No calculation done, only arguing the excuse is that it's 1:20 AM here. Going to bed.

2021-03-18, 22:29	#1830
petrw1 1976 Toyota Corona years forever! "Wayne" Nov 2006 Saskatchewan, Canada 2²×7×167 Posts	My only suggestion would be: if I TF the entire bit level regardless of the factor size I should get full credit ... because if someone later wants to find more factors they don't need to redo this bit level. Do I correctly assume mfaktc/Prime95 does not retain classes complete on a partial TF for later continuation?

2021-03-19, 02:46	#1833
Jwb52z Sep 2002 798₁₀ Posts	P-1 found a factor in stage #2, B1=743000, B2=20368000. UID: Jwb52z/Clay, M103164703 has a factor: 10394318420108355367002377 (P-1, B1=743000, B2=20368000). 83.104 bits.

2021-03-22, 02:52	#1835
LaurV Romulan Interpreter Jun 2011 Thailand 7×1,373 Posts	Congrats, triple 59, next one you will find will start with a quadruple 69...