20200929, 07:13  #1 
Romulan Interpreter
Jun 2011
Thailand
3^{2}×29×37 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
2^{4}×389 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
3^{3}×173 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
3^{2}·29·37 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
2^{2}·3·163 Posts 
Quote:


20200929, 17:58  #7  
P90 years forever!
Aug 2002
Yeehaw, FL
16562_{8} Posts 
Quote:


20200930, 01:49  #8 
Romulan Interpreter
Jun 2011
Thailand
10010110111001_{2} 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
80F_{16} 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. 
Thread Tools  
Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Behold, "The World's Most Secure RSA key"®©™ : 2^12771  jdcs  Lounge  51  20190929 05:17 
I want to factorize 2^12771  tanaydin  Information & Answers  29  20180514 01:09 
Factored vs. Completely factored  aketilander  Factoring  4  20120808 18:09 
RSA190 factored  poily  Factoring  16  20101206 13:36 
F33 is factored !!  Raman  Factoring  4  20100401 13:57 