20050908, 02:35  #12 
Jul 2004
Nowhere
329_{16} Posts 
I will be starting today with the new range of 500  600 million i will go in 1 million incriments so 501 then on to 502 to 25 bits thats the top this is prefactor for what is to come.

20050908, 08:17  #13  
Jun 2003
Russia, Novosibirsk
326_{8} Posts 
Quote:


20050918, 17:20  #14 
Jul 2004
Nowhere
809 Posts 
Range 500  501 is done to 25 now starting on 501 to 502

20050921, 20:11  #15 
"Curtis"
Feb 2005
Riverside, CA
29·149 Posts 
Note that factoring to 48 or 49 bits is almost the exactsame time as factoring to 32 bits (or less). Also note that factors of numbers this large are nearly always (perhaps necessarily I forget the math involved) larger than the exponent, which for 500M is larger than 25 bits.
Loading/computing the power takes more time than trial factoring from 32 to 48 bits, so I suggest you run your first batch to 48 bits... at least timetrial it for a batch and compare before you go through all the effort to run a sub48bit pass. Curtis 
20051021, 01:10  #16  
"Richard B. Woods"
Aug 2002
Wisconsin USA
1E0C_{16} Posts 
Quote:
Quote:
In fact, any factor of any Mersenne number with a prime exponent is larger than the exponent. (3 is a factor of 2^{4}1, but 4 isn't prime.) Factors are 2kp+1, where p is the (prime) exponent, so any factor of any Mersenne number (with prime exponent) is at least one bit larger than the exponent. 

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