[QUOTE=mdettweiler;259573]Note that ever since we upgraded the PRPnet server to version 4.1.4, it has clients check the +1's automatically (and stores the residuals in the server results files, available from [URL]http://www.noprimeleftbehind.net/tps/[/URL]). Of course, you may still want to do a doublecheck, but the initial check is automatically taken care of (generally on the same client machine that found the original -1 prime).[/QUOTE]

Ok I did a check anyway :)

173943*2^480166+1 is not prime. Proth RES64: 08559155C6E8CABD Time : 371.504 sec.
179025*2^480578+1 is not prime. Proth RES64: 1F4BCFCFE5B43B85 Time : 370.618 sec.
115095*2^480748+1 is not prime. Proth RES64: 0A925998113E43DB Time : 307.396 sec.
112983*2^480882+1 is not prime. Proth RES64: 90E8491411FE7161 Time : 308.301 sec.
146649*2^480989+1 is not prime. Proth RES64: 7408B6508FC388FE Time : 371.729 sec.
182379*2^481201+1 is not prime. Proth RES64: FB973052CB71AFAC Time : 371.908 sec.
158655*2^481257+1 is not prime. Proth RES64: 7DC37505FCBBD669 Time : 371.069 sec.
101085*2^483510+1 is not prime. Proth RES64: 6C1364E77C24175C Time : 310.906 sec.
117711*2^483635+1 is not prime. Proth RES64: 0FFED8CAE0BD7500 Time : 310.842 sec.
103077*2^483810+1 is not prime. Proth RES64: BA7164860CCC5DF5 Time : 312.482 sec.
182523*2^483936+1 is not prime. Proth RES64: 047FF2FC723D0874 Time : 374.465 sec.

Lennart

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


[B]78081*2^482529+1[/B] is Prime!

Lennart[/QUOTE]


all I know about this topic is k*2^n[TEX]\pm[/TEX] 1 only seems to be possible twin when k mod 3=0 . the bolded seems impossible once with it not prime the next with it prime.

[QUOTE=science_man_88;259671]all I know about this topic is k*2^n[TEX]\pm[/TEX] 1 only seems to be possible twin when k mod 3=0 . the bolded seems impossible once with it not prime the next with it prime.[/QUOTE]

See post #33. Lennart corrected it there.

178107*2^481694-1 is Prime
173985*2^481857-1 is Prime

Lennart

182505*2^482066-1 is Prime
198045*2^482129-1 is Prime
111573*2^482160-1 is Prime
110295*2^482405-1 is Prime
110439*2^482447-1 is Prime
150591*2^482527-1 is Prime
167877*2^482568-1 is Prime
170049*2^482689-1 is Prime
101055*2^482696-1 is Prime
123807*2^482808-1 is Prime
140925*2^482839-1 is Prime


Lennart

odicin found the following prime a while back while Oddball was on vacation:


user=odicin
[2011-08-07 01:07:46]
139023*2^485174-1 is prime! Time : 0.0 sec.
user=odicin
[2011-08-07 01:07:46]
139023*2^485174+1 is not prime. Res64: 65644C7379D517CF Time : 0.0 sec.

[QUOTE=mdettweiler;270564]odicin found the following prime a while back while Oddball was on vacation:


user=odicin
[2011-08-07 01:07:46]
139023*2^485174-1 is prime! Time : 0.0 sec.
user=odicin
[2011-08-07 01:07:46]
139023*2^485174+1 is not prime. Res64: 65644C7379D517CF Time : 0.0 sec.[/QUOTE]
It's on the list now. We'll need two more primes to get to 100 primes found :smile:

By celebratory of two new primes found (and the hundreds overeall on this server), I'm now registered here in the forum :smile:

[2011-09-13 12:54:34]
144747*2^485360-1 is prime! Time : 0.0 sec.
144747*2^485360+1 is neither PRP nor prime

[2011-09-14 00:19:41]
159159*2^485373-1 is prime! Time : 0.0 sec.
159159*2^485373+1 is neither PRP nor prime

Regards Odi

[FONT=Arial, Helvetica, sans serif]144183*2^486398-1 is prime

--
Lumiukko
[/FONT]

[2011-09-16 13:09]
116355*2^485485-1 is prime! Time : 0.0 sec.
116355*2^485485+1 is neither PRP nor prime

[2011-09-18 03:48]
161691*2^486091-1 is prime! Time : 0.0 sec.
161691*2^486091+1 is neither PRP nor prime

[2011-09-18 05:04]
149085*2^486161-1 is prime! Time : 0.0 sec.
149085*2^486161+1 is neither PRP nor prime

[2011-09-18 07:34]
134949*2^486309-1 is prime! Time : 0.0 sec.
134949*2^486309+1 is neither PRP nor prime

Odi

113175*2^486067-1
138891*2^486095-1
180411*2^486159-1
150849*2^486587-1
179085*2^486798-1
155145*2^486858-1


[SIZE=7]Is Prime :)[/SIZE]