mersenneforum.org

mersenneforum.org (https://www.mersenneforum.org/index.php)
-   Twin Prime Search (https://www.mersenneforum.org/forumdisplay.php?f=65)
-   -   List of variable-n primes found (https://www.mersenneforum.org/showthread.php?t=13831)

mdettweiler 2011-01-15 01:33

Oddball, did you by chance forget this one?

user=Flatlander
[2011-01-14 04:13:15]
31239*2^484153-1 is prime! Time : 1460.0 sec.

It's listed in the rally thead but not here.

Oddball 2011-01-15 05:54

[QUOTE=mdettweiler;246435]Oddball, did you by chance forget this one?

user=Flatlander
[2011-01-14 04:13:15]
31239*2^484153-1 is prime! Time : 1460.0 sec.

It's listed in the rally thead but not here.[/QUOTE]
No, I didn't forget it. I'm just holding off on checking it for twins since all of my computing power is currently devoted to the rally :smile:

mdettweiler 2011-01-15 06:37

[QUOTE=Oddball;246470]No, I didn't forget it. I'm just holding off on checking it for twins since all of my computing power is currently devoted to the rally :smile:[/QUOTE]
Ah, right...makes sense. :smile:

mdettweiler 2011-01-16 01:55

user=mdettweiler
[2011-01-15 18:24:25]
10641*2^482399-1 is prime! Time : 0.0 sec.

Doublecheck (done on a different computer than the one that found the prime):
10641*2^482399-1 is prime! Time : 421.080 sec.

10641*2^482399+1 is not prime. Proth RES64: 5782B69ECBADD215 Time : 426.889 sec.

Quite interestingly, it seems that Mini-Geek has also found a prime on this exact same n... :shock:

Mini-Geek 2011-01-16 04:04

30705*2^482399-1 is prime!
30705*2^482399+1 is not prime. Proth RES64: 6E8D3D7C0374F178

Lennart 2011-01-16 05:41

52125*2^482492-1 is Prime!

No twin.

Lennart

mdettweiler 2011-01-16 05:46

[QUOTE=Lennart;246685]52125*2^482492-1 is Prime!

No twin.

Lennart[/QUOTE]
Could you by chance post the residual for the +1 test for archival in the second post of this thread?

Lennart 2011-01-16 07:04

52125*2^482492+1 is not prime. Proth RES64: 8C4879C6B5A03FA8 Time : 367.205 sec.
78081*2^482529+1 is not prime. Proth RES64: DCFEF34DD8DF516F Time : 365.880 sec.


78081*2^482529+1 is Prime!

Lennart

Ralf Recker 2011-01-16 12:02

7077*2^482292-1 is prime
7077*2^482292+1 is not prime. Proth RES64: B09D2783CE091EE0 Time : 215.599 sec.

82719*2^482469-1 is prime
82719*2^482469+1 is not prime. Proth RES64: D942486C08579C94 Time : 215.862 sec.

Ralf Recker 2011-01-16 19:16

67917*2^482936-1 is prime
67917*2^482936+1 is not prime. Proth RES64: D8F51BBA3726A0F1 Time : 233.638 sec.

Lennart 2011-01-16 20:45

[QUOTE=Lennart;246692]52125*2^482492+1 is not prime. Proth RES64: 8C4879C6B5A03FA8 Time : 367.205 sec.
78081*2^482529+1 is not prime. Proth RES64: DCFEF34DD8DF516F Time : 365.880 sec.


78081*2^482529+1 is Prime!

Lennart[/QUOTE]

78081*2^482529-1 is Prime!

Not +1 :)

Lennart


All times are UTC. The time now is 20:41.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.