20190406, 02:57  #452 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
3·3,229 Posts 
2357 is a pretty prime number itself. (2, 3, 5, 7, you know)
So it is doubly nice to have M2357 factored! Congrats, Ryan! 
20190406, 05:15  #453  
Jun 2003
23·229 Posts 
Quote:


20190406, 07:38  #454  
Jul 2014
64_{8} Posts 
something is wrong with the status of M2357.
FECM (factored) PPRP (probable prime) ????? CLL(verified) Quote:


20190406, 08:59  #455 
Einyen
Dec 2003
Denmark
3,253 Posts 
I did use the factor in the worktodo line, so it is:
M2357/66747193058349253980250138299492944283449631375464079700189511 that is PRP, but not sure why the history is wrong. 
20190406, 13:27  #456  
Feb 2017
Nowhere
12344_{8} Posts 
Congrats on completing another factorization! Something on the factordb page piqued my curiosity:
Quote:


20190406, 13:54  #457 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
10010111010111_{2} Posts 
FDB allows users to manually check in any base (one just types in the "base" and the server runs it). Running funny bases, like 91 or 35 is not a faux pas per se. But 125 _after_ 5,  yeah, that's a bit silly.

20190406, 21:43  #458  
Serpentine Vermin Jar
Jul 2014
2^{2}×3×277 Posts 
Quote:
There is a frustrating amount of variations on how the JSON data was being formatted. Between the different builds of Prime95 and also gpuOwl, there was never really any agreement ahead of time on how it should look, so I've been playing catchup with it. For instance, the known factors may show up as a JSON array, or maybe as a value of comma separated numbers. Or maybe upper or lower case, or maybe it's another level deep, etc. LOL George has settled on a (hopefully) final format in the latest builds of P95 but until we get the first example of something, I'm never really sure what it's going to look like. Now that I see what a PRP looks like for a cofactor test, I can update the code that makes the raw result look pretty for the website. It did indeed change from: Quote:
Quote:


20190406, 23:56  #459 
Sep 2003
5·11·47 Posts 
The 330th fullyfactored or probablyfullyfactored Mersenne number with prime exponent (not including the Mersenne primes themselves) is M78737.
The 29digit factor was found by Niels Mache Nextcloud, and the PRP test on Primenet was done by ATH. If certified prime, the cofactor would be a new record for Mersenne cofactors, beating the current M63703. However it would still be smaller than the Wagstaff prime with exponent 83339. Last fiddled with by GP2 on 20190407 at 00:10 
20190408, 03:43  #460  
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
137A_{16} Posts 
Lightning strikes twice
Quote:
20190407 Ryan Propper FECM Factor: 92006001376648044276967530077499930523710420381051263551 

20190408, 04:28  #461  
Sep 2002
Database er0rr
23×173 Posts 
Quote:
Code:
time ./pfgw64 k f0 od q"(2^787371)/23714605956035916529/67059801476528402969297162417"  ../../coding/gwnum/lucasPRP  1 2 78737 1 Lucas testing on x^2  3*x + 1 ... Is Lucas PRP! real 0m2.558s user 0m2.200s sys 0m0.008s 

20190408, 06:52  #462 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
9687_{10} Posts 

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