mersenneforum.org 79M 79.3M to 2^59 (low prio)
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 2003-02-20, 20:06 #1 smh     "Sander" Oct 2002 52.345322,5.52471 118910 Posts As a low prio project: 79M 79.3M Factoring to 2^59
2003-02-22, 19:16   #2
nitro

Feb 2003

2×3×13 Posts

Quote:
 Originally Posted by smh As a low prio project: 79M 79.3M Factoring to 2^59
I know you're probably on a quicker machine, but I factored M79299719 to 72 bits on a PII-300, took 9 months. The P-1 took one month.

regards

 2003-02-23, 01:12 #3 garo     Aug 2002 Termonfeckin, IE 276610 Posts Except that he is only doing it to 2^59 which conceivable makes it atleast 2^13 times faster.
 2003-02-23, 10:35 #4 smh     "Sander" Oct 2002 52.345322,5.52471 29×41 Posts For now, i'm only testing numbers that are factored to 2^58, and bring them to the 2^59 level. I might bring them to 2^60 later, or do the 2^59 level for some lower numbers. Another question. Do you guys also plan to bring numbers below 2M to a higher level?
2003-02-23, 11:18   #5
tha

Dec 2002

15168 Posts

Quote:
 Originally Posted by smh Do you guys also plan to bring numbers below 2M to a higher level?
Everyone decides for him/herself what suits best. There is at least one person checking in results in that range every week, for quite some time now. Recently all exponents were factored up to 2^57. He is continuing now up to 2^58. But I guess he would appreciate help in that range.

 2003-02-23, 13:43 #6 smh     "Sander" Oct 2002 52.345322,5.52471 29·41 Posts Factoring these numbers is getting time consuming, and a lot of these numbers (especially the lower ones) have already had a lot of ECM or P-1. For GIMPS it doesn't really matter if these numbers are factored or not, since they are already tested composite at least twice. If you want to factor these numbers, there are probably more efficient ways then trial factoring.
 2003-02-24, 13:59 #7 jocelynl   Sep 2002 2·131 Posts What are you talking about? 79M - 79.3M is the end of the range. (79 300 000) Are you doing 7.9m (7 900 000)? If so, then yes, these have been done. you should do 79M this range is very little time consuming it is very fast at 2^58 one or two minutes per number. Please let us know.
2003-02-24, 19:30   #8
tha

Dec 2002

2·32·47 Posts

Quote:
 Originally Posted by jocelynl What are you talking about?
He is writing about the range 0 to 2,000,000

YotN,

Tha

 2003-02-24, 19:54 #9 smh     "Sander" Oct 2002 52.345322,5.52471 29×41 Posts Yes i am factoring 79M - 79.3M. It takes about a minute per number to factor from 2^58 to 2^59 and about 2500 numbers (IIRC) to be done in this range. But like i said, it's at low priority for me. The pc isn't on 24/7 and i might use the cpu for other things. Guess it will be done by the end of the week. The 2M question had nothing to do with my reservation. I was just wondering if some people are planning to bring that range to the next bit level
 2003-02-25, 00:15 #10 trif     Aug 2002 2×101 Posts I know there is someone working down in that range because nofactor.cmp shows exponents there are being updated. Getting all exponents to 58 bits is going to be a long time out there because there are many exponents that are assigned in PrimeNet that are only done to 57. It will be a very long time before they are all done.
 2003-03-01, 23:34 #11 smh     "Sander" Oct 2002 52.345322,5.52471 29·41 Posts Range done, and results sent to George.

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