Found a factor, sunshine? Embalm and entomb it here! (RU "Выкрасить и выбросить")) - Page 194

nordi · 2022-05-05, 18:07

When looking at this result, I was expecting it to be yet another composite factor. Turns out it wasn't:

M12731681 has a 151.792-bit (46-digit) factor: 4942614515973735792916302243662188576877302039 (P-1,B1=400000,B2=428459850)

That will be 17th place on the Mersenne top factors for P-1 and is by far the biggest factor I ever found with P-1!

LaurV · 2022-05-06, 02:29

Whaaa! Congrats! Nice found!
Same number of digits like my best (currently position 13), but it falls about 0.9 bits shorter

nordi · 2022-05-10, 19:23

Getting lucky again with my P-1 factoring:

M12782851 has a 235.159-bit (71-digit) composite (P21+P24+P27) factor: 61645213700098762638579831947213762951673986053039553206940532463429217 (P-1,B1=400000,B2=428459850)

That's the biggest triple factor I ever found (out of 4 in total).

Jwb52z · 2022-05-11, 16:02

P-1 found a factor in stage #1, B1=509000.
UID: Jwb52z/Clay, M115285087 has a factor: 111450819426998736215606681 (P-1, B1=509000)

86.527 bits.

DrobinsonPE · 2022-05-16, 02:37

I finally found one that made the top 500 in this list https://www.mersenne.ca/userfactors/pm1/1/bits.

https://www.mersenne.ca/exponent/3884411 has a 123.607 bit exponent.

currently at #384 and the first factor I have found larger than 109 bits!

James Heinrich · 2022-05-16, 02:52

Quote:

Originally Posted by DrobinsonPE

...the first factor I have found larger than 109 bits!

But according to your personal factors list, you've found this and 4 other factors larger than 109.x bits, including two larger than this (131 & 136 bits, #84 & #158 in the top-500 list).

DrobinsonPE · 2022-05-16, 03:38

Quote:

Originally Posted by James Heinrich

But according to your personal factors list, you've found this and 4 other factors larger than 109.x bits, including two larger than this (131 & 136 bits, #84 & #158 in the top-500 list).

Cool! I did not know that list existed. I was just watching the factors I found and keeping track in my head. Obviously i missed a few and found some before I started looking.

You are my new favorite person for today!

LordJulius · 2022-05-17, 00:27

Quote:

Originally Posted by James Heinrich

But according to your personal factors list, ...

Hi James. Are you the right person to ask about merging my two IDs as shown on that list (the old "Lord Julius" into newer "LordJulius")? If it's simple, I would appreciate it.

James Heinrich · 2022-05-17, 01:27

Quote:

Originally Posted by LordJulius

Hi James. Are you the right person to ask about merging my two IDs as shown on that list (the old "Lord Julius" into newer "LordJulius")? If it's simple, I would appreciate it.

I am the right person to ask about anything on mersenne.ca

I have renamed/merged all Lord Julius into LordJulius.

Jwb52z · 2022-05-17, 21:16

P-1 found a factor in stage #1, B1=510000.
UID: Jwb52z/Clay, M115435169 has a factor: 12873265828509838756458407 (P-1, B1=510000)

83.413 bits.

mrh · 2022-05-22, 15:31

M110368889 has a 119.453-bit (36-digit) factor: 909751501112745686529881562093681577 (P-1,B1=585000,B2=34699170)

one of my older machines still working hard...

2022-05-06, 02:29	#2125
LaurV Romulan Interpreter "name field" Jun 2011 Thailand 10011011110101₂ Posts	Whaaa! Congrats! Nice found! Same number of digits like my best (currently position 13), but it falls about 0.9 bits shorter Last fiddled with by LaurV on 2022-05-06 at 02:30

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2022-05-05, 18:07	#2124
nordi Dec 2016 78₁₆ Posts	When looking at this result, I was expecting it to be yet another composite factor. Turns out it wasn't: M12731681 has a 151.792-bit (46-digit) factor: 4942614515973735792916302243662188576877302039 (P-1,B1=400000,B2=428459850) That will be 17th place on the Mersenne top factors for P-1 and is by far the biggest factor I ever found with P-1!

2022-05-10, 19:23	#2126
nordi Dec 2016 2³·3·5 Posts	Getting lucky again with my P-1 factoring: M12782851 has a 235.159-bit (71-digit) composite (P21+P24+P27) factor: 61645213700098762638579831947213762951673986053039553206940532463429217 (P-1,B1=400000,B2=428459850) That's the biggest triple factor I ever found (out of 4 in total).

2022-05-11, 16:02	#2127
Jwb52z Sep 2002 332₁₆ Posts	P-1 found a factor in stage #1, B1=509000. UID: Jwb52z/Clay, M115285087 has a factor: 111450819426998736215606681 (P-1, B1=509000) 86.527 bits.

2022-05-16, 02:37	#2128
DrobinsonPE Aug 2020 215₈ Posts	I finally found one that made the top 500 in this list https://www.mersenne.ca/userfactors/pm1/1/bits. https://www.mersenne.ca/exponent/3884411 has a 123.607 bit exponent. currently at #384 and the first factor I have found larger than 109 bits!

2022-05-17, 21:16	#2133
Jwb52z Sep 2002 1100110010₂ Posts	P-1 found a factor in stage #1, B1=510000. UID: Jwb52z/Clay, M115435169 has a factor: 12873265828509838756458407 (P-1, B1=510000) 83.413 bits.

2022-05-22, 15:31	#2134
mrh "mrh" Oct 2018 Temecula, ca 66₁₀ Posts	M110368889 has a 119.453-bit (36-digit) factor: 909751501112745686529881562093681577 (P-1,B1=585000,B2=34699170) one of my older machines still working hard...