20220916, 17:22  #2202 
Aug 2022
China
2^{2}·7 Posts 
M115805527 has a factor: 677697503509919022558931969 (P1, B1=495000, B2=12976000)
89.131 bits The only factor found in my previous ~180 factoring attempts Last fiddled with by SuikaPredator on 20220916 at 17:23 
20220920, 05:19  #2203 
Sep 2002
3·281 Posts 
P1 found a factor in stage #2, B1=531000, B2=18418350.
UID: Jwb52z/Clay, M116443783 has a factor: 82696735044909751763113583 (P1, B1=531000, B2=18418350) 86.096 bits. 
20220925, 21:23  #2204 
Sep 2002
3×281 Posts 
P1 found a factor in stage #2, B1=532000, B2=18423900.
UID: Jwb52z/Clay, M116482291 has a factor: 20599239462162799560243380417 (P1, B1=532000, B2=18423900) 94.057 bits. 
20220928, 23:32  #2206 
Sep 2002
3·281 Posts 
P1 found a factor in stage #2, B1=532000, B2=18426750.
UID: Jwb52z/Clay, M116499679 has a factor: 1360916709713170590578566863745659001678613741993 (P1, B1=532000, B2=18426750) 159.897 bits. It's a composite factor, though: Here's the link on Mersenne.ca web site that lists the two prime factors that make it up: https://www.mersenne.ca/exponent/116499679 
20220929, 20:23  #2207 
Sep 2002
1101001011_{2} Posts 
P1 found a factor in stage #1, B1=521000.
UID: Jwb52z/Clay, M116053921 has a factor: 46515908802837469539326609 (P1, B1=521000) 85.266 bits. 
20221004, 06:54  #2208 
Dec 2021
1D_{16} Posts 
P1 found a factor in stage #2, B1=50000000, B2=160135168050.
M4968559 has a factor: 4518377100979343670213622713401394014756052836040689096521220599831 (P1, B1=50000000, B2=160135168050) Of course, a composite factor, but one of the prime factors is rather impressive too: \(4518377100979343670213622713401394014756052836040689096521220599831 = 2024609142059135603124721 \times 2231728093642762521609553280152576514699911\). The larger of these is 43 digits putting it at 59th on the top Mersenne factors list for P1, and 382nd overall. My first in the top 500 for either :) 
20221004, 13:33  #2209  
"James Heinrich"
May 2004
exNorthern Ontario
2·37·53 Posts 
Quote:
The P43 inside your composite is far bigger than any factor I've ever found. Last fiddled with by James Heinrich on 20221004 at 13:34 

20221004, 21:37  #2210 
Sep 2017
USA
3·61 Posts 
I am very happy about this factor, even if it is composite. And that candidate already had some low P1 done on it, which makes it feel even more rewarding.
M112259701 has a 193.882bit (59digit) composite (P25+P34) factor: 23141826223471609689663383919640272913859192422380792607727 (P1,B1=1237000,B2=417486300) 
20221004, 21:54  #2211  
"mrh"
Oct 2018
Temecula, ca
84_{10} Posts 
Quote:


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