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Old 2021-07-22, 02:01   #1904
LaurV
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Quote:
Originally Posted by Viliam Furik View Post
Now I have two top-500 entries.
Paraphrasing James, congrats and may you have many more in the future!
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Old 2021-07-28, 03:09   #1905
Jwb52z
 
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P-1 found a factor in stage #1, B1=759000.
UID: Jwb52z/Clay, M105269581 has a factor: 6228935338450361187678798473 (P-1, B1=759000)

92.331 bits. This is the highest bit level one I've had in a while, especially in stage 1.
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Old 2021-07-28, 14:34   #1906
James Heinrich
 
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Quote:
Originally Posted by Jwb52z View Post
92.331 bits. This is the highest bit level one I've had in a while, especially in stage 1.
Since early May.
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Old 2021-07-29, 23:37   #1907
Viliam Furik
 
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Quote:
Originally Posted by LaurV View Post
Paraphrasing James, congrats and may you have many more in the future!
Sure did!

M1055471 has a 123.071-bit (38-digit) factor: 11172871966337160594575665335374991233 (P-1,B1=10000000,B2=1000000000)

My new personal record, about 288th place in the top 500 when it's updated.

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Old 2021-07-31, 09:48   #1908
gLauss
 
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Found a nice P+1 factor, with 101 bits it is currently in the top 10 of Mersenne factors found by P+1. And k is prime, too! M836683.
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Old 2021-08-07, 17:10   #1909
Viliam Furik
 
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These 500K exponents are a gold mine.

M538751 has a 132.045-bit (40-digit) factor: 5617865834413045127033000770286991147617 (P-1,B1=10000000,B2=1110000000)

New personal best!


I am doing the P-1 with bounds as mentioned -> B1=10,000,000, B2 is automatic. This results in about 1.35 GHz-D of work, on average. If anyone wants to look for potentially really big factors, I recommend B1=25,000,000, at least. I think I am going to change it to that value right now...
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Old 2021-08-08, 06:41   #1910
LaurV
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Quote:
Originally Posted by Viliam Furik View Post
M538751 has a 132.045-bit (40-digit) factor: 5617865834413045127033000770286991147617 (P-1,B1=10000000,B2=1110000000)

New personal best!
Yay! Well done!
Congrats!
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Old 2021-08-08, 14:18   #1911
Happy5214
 
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Quote:
Originally Posted by Viliam Furik View Post
These 500K exponents are a gold mine.

M538751 has a 132.045-bit (40-digit) factor: 5617865834413045127033000770286991147617 (P-1,B1=10000000,B2=1110000000)

New personal best!

[...]

I am doing the P-1 with bounds as mentioned -> B1=10,000,000, B2 is automatic. This results in about 1.35 GHz-D of work, on average. If anyone wants to look for potentially really big factors, I recommend B1=25,000,000, at least. I think I am going to change it to that value right now...
Glad you're getting mileage (or whatever the SI equivalent is) from the 500K range. I only found one factor from the whole 520K-525K range (mentioned in a previous post in this thread) using the worktodo-generating Python script.

Last fiddled with by Happy5214 on 2021-08-08 at 14:21 Reason: Trim quote
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Old 2021-08-08, 17:19   #1912
Viliam Furik
 
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Quote:
Originally Posted by Happy5214 View Post
Glad you're getting mileage (or whatever the SI equivalent is) from the 500K range. I only found one factor from the whole 520K-525K range (mentioned in a previous post in this thread) using the worktodo-generating Python script.
I am searching all factored exponents starting from 500,009 and increasing their bounds to 10,000,000. For the next ones, I switched to 20,000,000, which means fewer exponents per day, but a higher chance of factors. Based on the results, I will decide whether to switch back or continue with 20 million.

I am planning on getting to 1M exponents someday, where I've already started P-1, but I went to 500K because I thought those should also be lifted.
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Old 2021-08-09, 00:52   #1913
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Quote:
Originally Posted by Viliam Furik View Post
I am searching all factored exponents starting from 500,009 and increasing their bounds to 10,000,000. For the next ones, I switched to 20,000,000, which means fewer exponents per day, but a higher chance of factors. Based on the results, I will decide whether to switch back or continue with 20 million.

I am planning on getting to 1M exponents someday, where I've already started P-1, but I went to 500K because I thought those should also be lifted.
I've moved up to the 5.21M range for my next batch (based on the number in my user name), so there shouldn't be any conflicts between us. There's less ECM in that range too, so the B2's generated by that Python script should be higher. (I noticed your B2 was a bit higher than mine, and I was getting slightly under 1 GHz-day credit on my P-1 tasks.)
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Old 2021-08-09, 02:08   #1914
Viliam Furik
 
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Quote:
Originally Posted by Happy5214 View Post
I've moved up to the 5.21M range for my next batch (based on the number in my user name), so there shouldn't be any conflicts between us. There's less ECM in that range too, so the B2's generated by that Python script should be higher. (I noticed your B2 was a bit higher than mine, and I was getting slightly under 1 GHz-day credit on my P-1 tasks.)
It depends on the allocated RAM, and other things, so allowing ~2.5 GB of RAM per worker probably makes the difference.

Meanwhile...
Oh, you generated your B2s yourself. I let Prime95 generate them. So that's probably the main difference.

You can simply use this tool on mersenne.ca here. You can set your exponent range and B1, and it will generate worktodo lines for you. You only need to delete those which already had a bigger B1 done. Or use a script for them...
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