fond of a factor? Urn yourself to become remains

[LaurV]

I know you had a record of 127 bits, which honestly I have very little chance to beat it, many years from now, but I am coming to get you for lifetime credit... , get in the hundredth percentile on the leaderboard, and then I will go back to DC, and let some cores doing P-1 under 1M with very high limits. There is where the big factors come from. What do you know, I might get lucky!

[LaurV]

Well, when it rains it pours...

101 bits: 1755130524326397706550920646273

(edit: also very smooth, b1=4793, b2=3963979)

[kracker]

Originally Posted by LaurV

I know you had a record of 127 bits, which honestly I have very little chance to beat it, many years from now, but I am coming to get you for lifetime credit... , get in the hundredth percentile on the leaderboard, and then I will go back to DC, and let some cores doing P-1 under 1M with very high limits. There is where the big factors come from. What do you know, I might get lucky!

We'll see if I follow your plan like a puppy. But if you do pass me... just know that I have only a little over half my power running P-1 at the moment!

-Meow

[Uncwilly]

Anon on machine toma4tti found a factor by P-1:
332245861 has a factor of 514701206225822215282489657
reported on Nov 16 2013 @ 10:46PM 64.0 GHz-days 88.7 bits

[Uncwilly]

I had one machine find 2 factors in 2 days both P-1 stage 1.
64317947 has a factor of 52744473176262272623601 75.5 bits
64320973 has a factor of 4171438018009522530410037151 91.8 bits

[Uncwilly]

I had 4 machines hit with P-1 factors in a single day and 2 more today. One of these is my personal best:
64,489,937 has a factor of 177801640586828840036267140893769
107 bits
k = 2² × 3² × 7 × 53 × 257 × 269 × 283 × 1399 × 4799 × 785773

[flashjh]

That a nice one for Stage 1.

It's odd because I can go a week or two with no P-1 factors and then I've had 4 in the last week also. One is a nice Brent-Suyama:

M64455383
B1: 910,000
B2: 20,930,000
k = 3 × 19 × 89 × 109 × 557 × 464825197

But, it's nothing compared to markr's Brent-Suyama find on 18 Nov 13:

575,00010,350,000
M64369951
B1: 575,000
B2: 10,350,000
k = 2 × 154429598075412

[markr]

Originally Posted by flashjh

But, it's nothing compared to markr's Brent-Suyama find on 18 Nov 13: [...]

I wish!

(Nice find, Uncwilly!)

[Uncwilly]

Originally Posted by Uncwilly

I had 4 machines hit with P-1 factors in a single day and 2 more today. One of these is my personal best:
64,489,937 has a factor of 177801640586828840036267140893769
107 bits
k = 2² × 3² × 7 × 53 × 257 × 269 × 283 × 1399 × 4799 × 785773

And a new personal best (by a machine that must have felt left out):
M65360233 has a factor: 1949231719648150309066075034743183481
120.6 bits A new personal best!!!!!
k = 14911450205877863907447170780 = 2²×5×37×79×103×1607×5659×6337×16661×2579191

[flashjh]

You are on a roll. What memory settings do you use on those systems?

[TheJudger]

Originally Posted by Uncwilly

And a new personal best (by a machine that must have felt left out):
M65360233 has a factor: 1949231719648150309066075034743183481
120.6 bits A new personal best!!!!!
k = 14911450205877863907447170780 = 2²×5×37×79×103×1607×5659×6337×16661×2579191

go, go, go! Factors > 2¹²⁰ at the current P-1 wavefront aren't every day founds. Seems that you got all my factors, I had a bad series of nearly 300 P-1 assignments without any factor last week!

A factor is a factor is a factor, for GIMPS purpose it doesn't matter what kind of factor it is (small, big, smooth, ...) but humans might have other feelings.
My feelings about current wavefront P-1:

• <2¹⁰⁰: yet another daily P-1 factor
• 2¹⁰⁰ to 2¹²⁰: OK, somewhat bigger P-1 factor
• >2¹²⁰: hurray, big P-1 factor

There are some exceptions, ofcourse

• very smooth stage #1 factors
• Brent-Suyama with 10+ times above B2
• composite factors (in other words: multiple prime factors at once)

Oliver