20200929, 07:13  #1 
Romulan Interpreter
Jun 2011
Thailand
2^{3}×23×53 Posts 
...1277 Factored!
.
(Edit 20200930: original thread title: "1277 Factored!") Well, it has a 299 in front, but I am sure you people are clever enough not to care about such small difference... Made you click! For records, this was just random assignment, which turned out nice. I didn't hunt for it. Last fiddled with by LaurV on 20200930 at 01:59 
20200929, 07:44  #2 
Undefined
"The unspeakable one"
Jun 2006
My evil lair
1100001110011_{2} Posts 

20200929, 10:39  #3 
"Bo Chen"
Oct 2005
Wuhan,China
2^{3}×3×7 Posts 
1. I thought you mean 2^12771, but the link says it is not.
2. For the factor of 2^29912771, though it is less interest than 2^12771, it is still a interesting number. For time to time, I give a look to the count factored in range 0M1M, 1M2M, and 2M to 3M. 3. It is a little strange that mersenne.org log not include B1 and sigma information. 
20200929, 11:33  #4  
Feb 2017
Nowhere
2·5·13·37 Posts 
Quote:
For prime exponents p ending in 1277 up to 2991277, the following M_{p} are known to be composite but no factors are known. 1277 No factors below 2^{67} 451277 No factors below 2^{66} 801277 No factors below 2^{70} 1011277 No factors below 2^{71} 1191277 No factors below 2^{68} 1471277 No factors below 2^{68} 1671277 No factors below 2^{68} 1891277 No factors below 2^{68} 1921277 No factors below 2^{68} 2101277 No factors below 2^{68} 2281277 No factors below 2^{68} 2421277 No factors below 2^{68} 

20200929, 15:29  #5  
Romulan Interpreter
Jun 2011
Thailand
2^{3}×23×53 Posts 
Quote:
Code:
{"status":"F", "exponent":2991277, "worktype":"ECM", "factors":["8222494110478498955063"], "b1":50000, "b2":5000000, "sigma":3400619406816790, "stage":2, "curves":3, "fftlength":163840, "securitycode":"4D277D28", "program":{"name":"Prime95", "version":"29.8", "build":6, "port":4}, "timestamp":"20200917 20:34:08", "user":"LaurV", "computer":"3tits", "aid":"D6776C9977866F0A097B98129BF91EBF"} George/Aaron/James? Last fiddled with by LaurV on 20200929 at 15:32 

20200929, 15:41  #6  
Random Account
Aug 2009
11110110101_{2} Posts 
Quote:


20200929, 17:58  #7  
P90 years forever!
Aug 2002
Yeehaw, FL
2^{2}·3·631 Posts 
Quote:


20200930, 01:49  #8 
Romulan Interpreter
Jun 2011
Thailand
9752_{10} Posts 
Good to know. Thanks George. However the sigma for ECM could be displayed for factors, at least when "detail view" is chosen, that's a "proof", and also useful if somebody needs to "reconstruct" the run, or for whatever reason (on the other hand, such people are very few and they will ask )
(edit my silly joke is at least leading to some useful info/action, hihi, now we can change the title of the thread, to avoid someone having heart attack I will let those with more inspiration to do it. I mean, to change the title, but if for any reason somebody has more inspiration in having heart attacks, be my guest... For the records, original title: "1277 Factored!") Last fiddled with by LaurV on 20200930 at 01:54 
20200930, 06:51  #9 
"Rashid Naimi"
Oct 2015
Remote to Here/There
2^{2}×521 Posts 
There seems to be a sudden drop in posts by the the forum regulars after this thread was started.
I hope they don't end up in the RIP thread. Please be careful LaurV. Not all the members are young and healthy like me you know. 
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