New factoring breakeven points coming

[JHagerson]

I guess that the answer is no, but do these new limits apply to initial factoring? I have an assignment where the PrimeNet report indicates factoring to 2^62, but my old PII is factoring to 2^67 (M30230527). I understand that deeper factoring does not cause problems but is it efficient? Thank you, Dr. Woltman, for your efforts.

[Mystwalker]

AFAI see it, everything seems to run as planned.
From the first posting:

#define FAC72 96830000L
#define FAC71 75670000L
#define FAC70 58520000L
#define FAC69 47450000L
#define FAC68 37800000L
#define FAC67 29690000L
#define FAC66 23390000L

Assuming those are lower boundaries, 67 bit trial factoring depth is the way to go.

For comparison, the old breakevens were:

#define FAC72 71000000L
#define FAC71 57020000L
#define FAC70 44150000L
#define FAC69 35200000L
#define FAC68 28130000L
#define FAC67 21590000L
#define FAC66 17890000L

I quite sure that 68 bit would have been the old value.

[cheesehead]

Originally Posted by JHagerson

I have an assignment where the PrimeNet report indicates factoring to 2^62, but my old PII is factoring to 2^67 (M30230527). I understand that deeper factoring does not cause problems but is it efficient?

That field ("62") of the Primenet report is showing how far (2^62) the number had been (unsuccessfully) trial-factored before it was assigned to you, not the limit to which you were to TF it during your assignment. After you report completion of TF to 2^67, the report will show "67".

In addition to the GIMPSters processing PrimeNet assignments, some people ("Lone Mersenne Hunters" -- a slightly misleading pun on "Lone Gunmen" from the X-Files TV series) have been systematically trying to TF all the numbers to lower bounds (typically 2^61 or 2^62) before PrimeNet hands them out as assignments. They had previously trial-factored M30230527 to 2^62 before PrimeNet assigned that number to you, so your assignment included finishing up the trial factoring (from 2^62 up to 2^67 in this case; under the pre-V24.12 limits it would have been from 2^62 up to 2^68).

Be assured that you are performing the correct (efficient) amount of TF; you are TFing to a shallower, not deeper, level than you would have under the pre-V24.12 limits.

[JHagerson]

Thank you very much, Cheesehead. That explains quite a bit.

[JuanTutors]

Sorry, I need a quick translation of this table.

#define FAC72 96830000L
#define FAC71 75670000L
#define FAC70 58520000L
#define FAC69 47450000L
#define FAC68 37800000L
#define FAC67 29690000L
#define FAC66 23390000L

Does this mean, for example, that M30000000 would be factored up to 2^67 or 2^68?

[ixfd64]

I can't wait! :o

[RMAC9.5]

2^67 for all numbers less than 37800000.

[garo]

24.12 has been out for a year now so there is no need to wait.

[ixfd64]

Ah, I got confused by a bumped thread. :\

[Mystwalker]

Originally Posted by ixfd64

Ah, I got confused by a bumped thread. :\

At least you didn't get bumped by a confused thread.