mersenneforum.org ...1277 Factored!
 Register FAQ Search Today's Posts Mark Forums Read

 2020-09-29, 07:13 #1 LaurV Romulan Interpreter     Jun 2011 Thailand 34×109 Posts ...1277 Factored! . (Edit 2020-09-30: 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 2020-09-30 at 01:59
2020-09-29, 07:44   #2
retina
Undefined

"The unspeakable one"
Jun 2006
My evil lair

22×1,447 Posts

Quote:
 Originally Posted by LaurV Made you click!

 2020-09-29, 10:39 #3 wreck     "Bo Chen" Oct 2005 Wuhan,China 7·23 Posts 1. I thought you mean 2^1277-1, but the link says it is not. 2. For the factor of 2^2991277-1, though it is less interest than 2^1277-1, it is still a interesting number. For time to time, I give a look to the count factored in range 0M-1M, 1M-2M, and 2M to 3M. 3. It is a little strange that mersenne.org log not include B1 and sigma information.
2020-09-29, 11:33   #4
Dr Sardonicus

Feb 2017
Nowhere

2·52·71 Posts

Quote:
 Originally Posted by LaurV 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 prime exponents p ending in 1277 up to 2991277, the following Mp are known to be composite but no factors are known.

1277 No factors below 267
451277 No factors below 266
801277 No factors below 270
1011277 No factors below 271
1191277 No factors below 268
1471277 No factors below 268
1671277 No factors below 268
1891277 No factors below 268
1921277 No factors below 268
2101277 No factors below 268
2281277 No factors below 268
2421277 No factors below 268

2020-09-29, 15:29   #5
LaurV
Romulan Interpreter

Jun 2011
Thailand

34×109 Posts

Quote:
 Originally Posted by wreck 3. It is a little strange that mersenne.org log not include B1 and sigma information.
That's indeed strange, and well spotted! None of the factors I found for a while with THIS computer has any reported B1/B2 or Sigma, in spite of the fact that they WERE reported correctly to the server. My log file says that I reported:

Code:
{"status":"F", "exponent":2991277, "worktype":"ECM", "factors":["8222494110478498955063"], "b1":50000, "b2":5000000, "sigma":3400619406816790, "stage":2, "curves":3, "fft-length":163840, "security-code":"4D277D28", "program":{"name":"Prime95", "version":"29.8", "build":6, "port":4}, "timestamp":"2020-09-17 20:34:08", "user":"LaurV", "computer":"3tits", "aid":"D6776C9977866F0A097B98129BF91EBF"}
Other computers I use have correct B1/B2 reported for all F and NF results. This only has NF results with B1/B2. There is however, no sigma in P95 reports (?!?).

George/Aaron/James?

Last fiddled with by LaurV on 2020-09-29 at 15:32

2020-09-29, 15:41   #6
storm5510
Random Account

Aug 2009
U.S.A.

22·401 Posts

Quote:
 Originally Posted by LaurV 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.
Don't do that. I almost had a stroke when I saw the thread title.

2020-09-29, 17:58   #7
Prime95
P90 years forever!

Aug 2002
Yeehaw, FL

7×1,019 Posts

Quote:
 Originally Posted by LaurV That's indeed strange, and well spotted! None of the factors I found for a while with THIS computer has any reported B1/B2 or Sigma Other computers I use have correct B1/B2 reported for all F and NF results. This only has NF results with B1/B2. There is however, no sigma in P95 reports (?!?). George/Aaron/James?
The server has the data. Aaron's "pretty print" routine is choosing not to display it.

 2020-09-30, 01:49 #8 LaurV Romulan Interpreter     Jun 2011 Thailand 34·109 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 2020-09-30 at 01:54
 2020-09-30, 06:51 #9 a1call     "Rashid Naimi" Oct 2015 Remote to Here/There 111100000012 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.

 Similar Threads Thread Thread Starter Forum Replies Last Post jdcs Lounge 51 2019-09-29 05:17 tanaydin Information & Answers 29 2018-05-14 01:09 aketilander Factoring 4 2012-08-08 18:09 poily Factoring 16 2010-12-06 13:36 Raman Factoring 4 2010-04-01 13:57

All times are UTC. The time now is 05:27.

Wed Oct 21 05:27:34 UTC 2020 up 41 days, 2:38, 0 users, load averages: 1.08, 1.27, 1.39