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Forum: Riesel Prime Search 2020-02-20, 16:07
Replies: 1,944
Views: 160,978
Posted By VBCurtis
There is a location, and it's this forum. Other...

There is a location, and it's this forum. Other locations are for convenience. If you find them inconvenient, don't use them.
Forum: Riesel Prime Search 2020-02-02, 07:10
Replies: 1,944
Views: 160,978
Posted By VBCurtis
You should use the "post small primes... here"...

You should use the "post small primes... here" thread for primes smaller than the top-5000 list cutoff, presently in the vicinity of 2^1.4M.

Also, newpgen is very very slow for this form of prime....
Forum: Riesel Prime Search 2019-12-21, 20:13
Replies: 1,944
Views: 160,978
Posted By VBCurtis
Sorry for overlooking your question for so long. ...

Sorry for overlooking your question for so long. We run LLR to test k*2^n-1 or k*2^n+1 formats (and quite a few others). If LLR doesn't handle it, PFGW does.

Also, 231*2^2335281-1 is prime!...
Forum: Riesel Prime Search 2019-02-23, 04:32
Replies: 1,944
Views: 160,978
Posted By VBCurtis
2175*2^1484389 -1 is prime!

2175*2^1484389 -1 is prime!
Forum: Riesel Prime Search 2018-09-30, 04:41
Replies: 1,944
Views: 160,978
Posted By VBCurtis
From the 7th drive: 2655*2^1859692-1 (559827...

From the 7th drive:
2655*2^1859692-1 (559827 digits)
Forum: Riesel Prime Search 2018-06-25, 22:39
Replies: 1,944
Views: 160,978
Posted By VBCurtis
Well, it's not confirmed yet... I've run...

Well, it's not confirmed yet...

I've run k=127 for many years; ten or so, I would guess. Since ~1M, I don't quite recall.

The machine that made the discovery is a friend's office computer; it...
Forum: Riesel Prime Search 2018-06-21, 05:15
Replies: 1,944
Views: 160,978
Posted By VBCurtis
13*2^4333087-1 is prime. 1304391 digits. My...

13*2^4333087-1 is prime. 1304391 digits.

My first over 4 million.
Forum: Riesel Prime Search 2018-04-29, 23:03
Replies: 1,944
Views: 160,978
Posted By VBCurtis
45*23094632-1. 931579 digits.

45*23094632-1. 931579 digits.
Forum: Riesel Prime Search 2018-04-15, 20:31
Replies: 1,944
Views: 160,978
Posted By VBCurtis
Congrats on a huge find! #82 on top 5000.

Congrats on a huge find! #82 on top 5000.
Forum: Riesel Prime Search 2017-12-18, 22:22
Replies: 1,944
Views: 160,978
Posted By VBCurtis
229*22581111-1 is prime. 776995 digits.

229*22581111-1 is prime. 776995 digits.
Forum: Riesel Prime Search 2017-08-05, 17:02
Replies: 1,944
Views: 160,978
Posted By VBCurtis
A double-check on my i7-haswell (linux-sllr64)...

A double-check on my i7-haswell (linux-sllr64) confirms compositeness. Next time I see the machine that found this "prime", I'll make sure I didn't transpose digits when I copied down the exponent;...
Forum: Riesel Prime Search 2017-08-05, 15:58
Replies: 1,944
Views: 160,978
Posted By VBCurtis
Hrmm. Both were found by the same machine, a new...

Hrmm. Both were found by the same machine, a new low-end i3 desktop that hasn't had its case opened. Thanks for pointing this out- I'll run a double-check on another machine myself, as the...
Forum: Riesel Prime Search 2017-08-05, 07:16
Replies: 1,944
Views: 160,978
Posted By VBCurtis
99 · 2^3100087 - 1 (933222 digits) ...

99 · 2^3100087 - 1 (933222 digits)
99 · 2^3102401 - 1 (933918 digits)
Forum: Riesel Prime Search 2017-07-04, 03:39
Replies: 1,944
Views: 160,978
Posted By VBCurtis
45*2^2958002-1 (890449 digits)

45*2^2958002-1 (890449 digits)
Forum: Riesel Prime Search 2017-05-25, 15:18
Replies: 1,944
Views: 160,978
Posted By VBCurtis
99*2^2899303-1 (872780 digits)

99*2^2899303-1 (872780 digits)
Forum: Riesel Prime Search 2016-11-04, 18:19
Replies: 1,944
Views: 160,978
Posted By VBCurtis
93*2^2708718-1 (815408 digits)

93*2^2708718-1 (815408 digits)
Forum: Riesel Prime Search 2016-08-28, 23:17
Replies: 1,944
Views: 160,978
Posted By VBCurtis
Finally!!!!!!!!!!!!!! Congrats.

Finally!!!!!!!!!!!!!! Congrats.
Forum: Riesel Prime Search 2016-08-27, 04:27
Replies: 1,944
Views: 160,978
Posted By VBCurtis
93*22602483-1 This removes k=93 from the...

93*22602483-1

This removes k=93 from the list of k's with no megabit primes.
Forum: Riesel Prime Search 2016-07-01, 19:05
Replies: 1,944
Views: 160,978
Posted By VBCurtis
201*2^2421514-1 (728951 digits)

201*2^2421514-1 (728951 digits)
Forum: Riesel Prime Search 2016-05-27, 18:14
Replies: 1,944
Views: 160,978
Posted By VBCurtis
405*22137280-1 (643388 digits)

405*22137280-1 (643388 digits)
Forum: Riesel Prime Search 2016-04-14, 01:43
Replies: 1,944
Views: 160,978
Posted By VBCurtis
13*23527315-1. 1061829 digits. That's 3 over 3M...

13*23527315-1. 1061829 digits.
That's 3 over 3M for k=13, and 5 over 2M!
Forum: Riesel Prime Search 2016-02-24, 04:03
Replies: 1,944
Views: 160,978
Posted By VBCurtis
Crazy, huh? Barely 10k apart on a fairly...

Crazy, huh? Barely 10k apart on a fairly low-weight k.

Thanks, guys!
Forum: Riesel Prime Search 2016-02-18, 22:08
Replies: 1,944
Views: 160,978
Posted By VBCurtis
13*23664703-1 (1103187 digits) Mega. Digit.

13*23664703-1 (1103187 digits)

Mega. Digit.
Forum: Riesel Prime Search 2015-12-24, 07:58
Replies: 1,944
Views: 160,978
Posted By VBCurtis
Do you know what "independent events" means in...

Do you know what "independent events" means in the context of prime searching? Finding two primes, or no primes, does nothing to alter the frequency of future primes in your search.

Your comments...
Forum: Riesel Prime Search 2015-10-13, 18:08
Replies: 1,944
Views: 160,978
Posted By VBCurtis
99*22455451-1 is prime! (739194 digits)

99*22455451-1 is prime! (739194 digits)
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