mersenneforum.org Found a factor? Post it here!
 Register FAQ Search Today's Posts Mark Forums Read

2021-11-01, 01:24   #1970
James Heinrich

"James Heinrich"
May 2004
ex-Northern Ontario

E1116 Posts

Quote:
 Originally Posted by TheJudger M114860849 has a 224.754-bit (68-digit) composite (P32+P37) factor: 45453803780256165659829228890363539404384826272845623290616298112337 (P-1,B1=811000,B2=24076000,E=12)
Even just one component of that composite factor is #71 on the biggest P-1 factors list.

 2021-11-04, 16:57 #1971 Miszka     May 2013 Poland 10210 Posts M2003191 has a 97.506-bit (30-digits) factor: 225007102354851248019601430113 (P+1, B1=30000000, B2=1620000000) This is my second factor found using the P+1 method. This time there is a first factor for this Mersenne number.
 2021-11-05, 05:51 #1972 Jwb52z     Sep 2002 81110 Posts P-1 found a factor in stage #2, B1=757000, B2=21023000. UID: Jwb52z/Clay, M107203427 has a factor: 260429952341275128058663 (P-1, B1=757000, B2=21023000) 77.785 bits.
2021-11-05, 18:09   #1973
Miszka

May 2013
Poland

2·3·17 Posts

Quote:
 Originally Posted by TheJudger M114860849 has a 224.754-bit (68-digit) composite (P32+P37) factor: 45453803780256165659829228890363539404384826272845623290616298112337 (P-1,B1=811000,B2=24076000,E=12)
Congratulations, as that's not a very common accomplishment!
In my "merchandise" I have a factor that is a tad smaller 19147642464835832222111776488276027610060674573088897824886038321359 - 223. 506 bits M3146833

 2021-11-05, 19:18 #1974 Jwb52z     Sep 2002 811 Posts P-1 found a factor in stage #1, B1=757000. UID: Jwb52z/Clay, M107207129 has a factor: 98058773655358447592735572577 (P-1, B1=757000) 96.308 bits.
2021-11-18, 07:13   #1975
ixfd64
Bemusing Prompter

"Danny"
Dec 2002
California

11·13·17 Posts

Found my largest P-1 prime factor to date. 128 bits!

Quote:
 [Tue Nov 16 23:14:04 2021] P-1 found a factor in stage #2, B1=789000, B2=22834000, E=6. UID: ixfd64/dt-lab-26, M112991353 has a factor: 228447809578680398866569621097916626871 (P-1, B1=789000, B2=22834000, E=6), AID: 89CC27EABD59FDBCBDF20BC67B203E7F

Last fiddled with by ixfd64 on 2021-11-18 at 07:14

 2021-11-18, 07:15 #1976 James Heinrich     "James Heinrich" May 2004 ex-Northern Ontario E1116 Posts
2021-11-18, 10:38   #1977
axn

Jun 2003

2×32×293 Posts

Quote:
 Originally Posted by ixfd64 Found my largest P-1 prime factor to date. 128 bits!
Nice. But... E=6?! What version of P95 are you using?

2021-11-18, 12:53   #1978
James Heinrich

"James Heinrich"
May 2004
ex-Northern Ontario

13×277 Posts

Quote:
 Originally Posted by axn Nice. But... E=6?! What version of P95 are you using?
v30.3.6

 2021-11-18, 16:54 #1979 axn     Jun 2003 2×32×293 Posts Time to upgrade?
 2021-11-23, 23:20 #1980 Jwb52z     Sep 2002 811 Posts P-1 found a factor in stage #2, B1=759000, B2=21076000. UID: Jwb52z/Clay, M107472557 has a factor: 2175775820816119586199479 (P-1, B1=759000, B2=21076000) 80.848 bits.

 Similar Threads Thread Thread Starter Forum Replies Last Post Hugo1177 Miscellaneous Math 5 2021-02-11 07:40 Branger Factoring 15 2019-09-05 15:03 rogue Lounge 10 2008-11-21 05:25 victor Puzzles 7 2008-04-08 22:34

All times are UTC. The time now is 04:05.

Mon Jan 24 04:05:27 UTC 2022 up 184 days, 22:34, 0 users, load averages: 1.23, 1.24, 1.20