20220123, 22:47  #100 
P90 years forever!
Aug 2002
Yeehaw, FL
17624_{8} Posts 
Thusfar, I've found 6 new factors in the 79K,80K,81K ranges using B1=1e12, B2=20e15.
I'm reserving ranges 76K,77K,78K. 
20220129, 01:13  #101 
"Ethan O'Connor"
Oct 2002
GIMPS since Jan 1996
2×7^{2} Posts 
I found 2 biggish factors  129 & 134 bits  in my first batch of exponents in the 14k range:
M14321 Factor: 1227402003319228348725041527104377980649 / (P1, B1=1000000000, B2=3088390743498060) M14387 Factor: 27562343134739559423772046255780767094401 / (P1, B1=1000000000, B2=3088390743498060) I've been haphazardly poking around in the 1k and 45k regions as well and plan to finish up 14k. 
20220129, 10:00  #102 
"Seth"
Apr 2019
11·43 Posts 
Ethan I would suggest not working below 8K, those numbers have had substantial ECM by Ryan and I would be amazed if you found any factor below 200 bits.

20220129, 17:25  #103 
"Ethan O'Connor"
Oct 2002
GIMPS since Jan 1996
2×7^{2} Posts 

20220319, 21:24  #104 
P90 years forever!
Aug 2002
Yeehaw, FL
2^{2}×43×47 Posts 

20220401, 01:48  #105 
P90 years forever!
Aug 2002
Yeehaw, FL
1F94_{16} Posts 
Now taking 74000  74999

20220405, 00:51  #106 
P90 years forever!
Aug 2002
Yeehaw, FL
2^{2}·43·47 Posts 
and now 73000  74000

20220405, 01:04  #107 
If I May
"Chris Halsall"
Sep 2002
Barbados
2^{2}×2,713 Posts 

20220406, 04:18  #108 
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
2×2,617 Posts 
Avoiding toe stepping...
Work is starting on the next P1 project taking advantage of v30.8 here
I'm hoping/expecting it will pick up in the next couple weeks as the under 2000 warps up. At the highest level it's goals are very similar to this project: taking advantage of the power of v30.8 to find LOTS of P1 factors. That said, no one in either project wants to get in the way of the other (i.e. working in the same exponent ranges). Neither project has a lot of effort/assignees but we still want to respect each other. I will try to maintain an "assigned" list in Post #1 of the project noted above. I've noticed post #98 mentions some "claims" in this project. If this project wants to stake claim to every exponent under, say 100K?, I'm sure we can respect that. I can tell from recent activity that there is more independent P1 activity but I suggest that is the nature of the beast. We have no right to say what anyone can or cannot work on. That we will live with. I welcome any thoughts. Wayne 
20220409, 17:02  #109 
P90 years forever!
Aug 2002
Yeehaw, FL
1F94_{16} Posts 
For future reservations, please use this thread:
https://www.mersenneforum.org/showthread.php?t=27477 
20220523, 17:05  #110 
Dec 2016
5^{3} Posts 
M36919 has a 180.968bit (55digit) factor: 2997347544642661833497896836795494793702018162645139063 (P1,B1=2000000000,B2=401927737170960)
That gets me to the top of the list of P1 factors for Mersenne numbers! And all thanks to the new version 30.8 of mprime. 
Thread Tools  
Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Sieving freakishly big MMs (was "World record" phone number?)  davieddy  Operazione Doppi Mersennes  284  20211024 13:53 
...merely a question about ECM world record?  lukerichards  Factoring  29  20190326 16:32 
World record sized doublecheck?  Siegmund  PrimeNet  6  20160509 22:39 
World Record Factorial Prime Found  rogue  Lounge  8  20120302 16:41 
70 billion pixels Budapest (world record)  R. Gerbicz  Science & Technology  0  20100728 01:50 