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Old 2021-07-17, 14:05   #573
petrw1
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Quote:
Originally Posted by LaurV View Post
New personal record:

Factor: 9011312357092040498877854764229760034322626753

~152.659 bits
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Old 2021-07-17, 14:44   #574
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Quote:
Originally Posted by LaurV View Post
~152.659 bits
Wow, that's a lot of bits. Can I have some?
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Old 2021-07-18, 06:43   #575
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Today I also got a new personal record:

https://www.mersenne.org/report_expo...214847&full=1#

135.7 bits

Just sharing the joy.
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Old 2021-07-18, 08:29   #576
LaurV
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Quote:
Originally Posted by tha View Post
Today I also got a new personal record
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Old 2021-07-18, 16:36   #577
LaurV
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Chris, is everything ok with the twok page? I seem to be unable to access it, regardless of the browser. It just shows an empty screen.
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Old 2021-07-18, 16:53   #578
chalsall
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Quote:
Originally Posted by LaurV View Post
Chris, is everything ok with the twok page?
Thanks for pointing that out. Something weird with DNS on the server. Hacked a quick fix.
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Old 2021-07-20, 11:46   #579
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Have started working on taking 12.2M to 71 bits.
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Old 2021-07-21, 03:54   #580
LaurV
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This 188 bits factor should have been a very nice record ...

Except....
Code:
Splitting composite factor 317126962428718354552798557405359962578621220783007834567 into:
* 249515320122942257599965540869737
* 1270971907746835740860591
processing: P-1 factor 249515320122942257599965540869737 for M11886943 (B1=6,189,107, B2=185,673,210) (107.621 bits)
 CPU credit is 8.9141 GHz-days.
processing: P-1 factor 1270971907746835740860591 for M11886943 (B1=6,189,107, B2=185,673,210) (80.072 bits)
 CPU credit is 8.9141 GHz-days.
Grrr...

Last fiddled with by LaurV on 2021-07-21 at 03:56
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Old 2021-07-22, 18:42   #581
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I'm having bad luck. I've completed 406 TF assignments (203 TF=70, 203 TF=71) in the 14.65 range and found only one factor.

My math for the odds of this (assuming 1/70 and 1/71 success) is

odds of no factor: (69/70)^203 * (70/71)^203 = 0.003
odds of one factor: 1/70 * (69/70)^202 * (70/71)^203 * (406 choose 1) = 0.0178

I was starting to question my hardware (despite selftest and selftest2 both passing) but I guess this isn't too unreasonable (2% of the time I'd be writing this post).
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Old 2021-07-22, 19:35   #582
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Quote:
Originally Posted by SethTro View Post
I'm having bad luck. I've completed 406 TF assignments (203 TF=70, 203 TF=71) in the 14.65 range and found only one factor.

My math for the odds of this (assuming 1/70 and 1/71 success) is

odds of no factor: (69/70)^203 * (70/71)^203 = 0.003
odds of one factor: 1/70 * (69/70)^202 * (70/71)^203 * (406 choose 1) = 0.0178

I was starting to question my hardware (despite selftest and selftest2 both passing) but I guess this isn't too unreasonable (2% of the time I'd be writing this post).
Don't forget that your odds (1/70 and 1/71) are over-estimates; the assumption with those values is that no P-1 has been performed. I measured rates of 1/90 to 1/95 when I did the TF to 70 and 71 in the 14.0M range.

So, slightly unlucky, yes; but not too far out of the ordinary.
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Old 2021-07-22, 19:51   #583
petrw1
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Quote:
Originally Posted by masser View Post
Don't forget that your odds (1/70 and 1/71) are over-estimates; the assumption with those values is that no P-1 has been performed. I measured rates of 1/90 to 1/95 when I did the TF to 70 and 71 in the 14.0M range.

So, slightly unlucky, yes; but not too far out of the ordinary.
Yes, it depends a lot on how deep the P1 is; but that said stats are stats.

My record is 633 TF between factors; with 14 times over 400 attempts.
I also have more than 50 times with 2 factors in less than 10 attempts.
However, my average over 75,000 attempts still averages to about 1/100;
This is working in ranges with LOTS of P1 done.

Other ranges with standard levels if P1 are giving me averages of 1/85 attempts.
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