fond of a factor? Urn yourself to become remains - Page 38

markr · 2012-07-12, 10:47

I haven't done any low P-1 for a while, but couldn't resist. Very pleased to find a factor fairly quickly, although it means there will now be a long drought

.
P-1 found a factor in stage #2, B1=6000000, B2=240000000.
M838909 has a factor: 1453468273441466194761003847
28 decimal digits, 91 bits
k = 3^2 x 181 x 23117 x 130469 x 176319691

TObject · 2012-07-12, 18:05

M67389481 has a factor: 1543348085740945176727
k = 3^3 * 11 * 82757 * 465887 = 11450956906323

TObject · 2012-07-12, 18:25

M344112403 has a factor: 1042173856480468315151
k = 5^2 * 31 * 103 * 18970157 = 1514292782525

Jwb52z · 2012-07-13, 04:36

M56309941:

P-1 found a factor in stage #1, B1=545000.
UID: Jwb52z/Clay, M56309941 has a factor: 21878160101311995365897

It is 74.212 bits which is another one that was narrowly missed by previous work, I guess.

Jwb52z · 2012-07-13, 13:59

This is just my lucky day

M56570351

P-1 found a factor in stage #1, B1=560000.
UID: Jwb52z/Clay, M56570351 has a factor: 189058627460533229809313

It's 77.323 bits, so it's another factor that isn't hugely far beyond the previous factoring work.

Bdot · 2012-07-13, 14:42

Quote:

Originally Posted by Axelsson

Done!

I've re-run all the candidates I tested with mfakto 0.11 earlier and with the new 0.12 code I found 19 factors, two already known.

I even think the new program is a bit faster than the old one.

/Göran

Oh, and BTW, my mfaktc-run returned the same set of factors. This means all candidates for mfakto-missed factors have been rechecked. Thanks again to all involved in the cleanup.

c10ck3r · 2012-07-14, 03:00

M890091977 has a factor: 1966225272665366346285896554164056540033-130.531 bits
splits as:
M890091977 has a factor: 47183073503648976793-65.359 bits
M890091977 has a factor: 41672259279873008681-65.176 bits
k=2^2*3^2*17*467*92737
k=2^2*5*31*37*79*12917
Could've been found with ~B1=13k B2=95k or b1=b2=93k

TObject · 2012-07-16, 17:27

M344112799 has a factor q=321855887896651410431; log2(q)=68.125...
k = 5 * 19 * 29 * 31 * 5475797 = 467660442785; log2(k)=38.767...

Jwb52z · 2012-07-16, 19:41

P-1 found a factor in stage #1, B1=560000.
UID: Jwb52z/Clay, M56726627 has a factor: 67204881864680452191371071

It's 85.797 bytes.

Jwb52z · 2012-07-18, 13:41

P-1 found a factor in stage #2, B1=565000, B2=11158750.
UID: Jwb52z/Clay, M56907583 has a factor: 7878087690390529790977

This was narrowly missed by TF because the factor is only: 72.738 bits

Jwb52z · 2012-07-18, 19:16

P-1 found a factor in stage #2, B1=565000, B2=11158750.
UID: Jwb52z/Clay, M56929319 has a factor: 26321049935496807610001

74.479 bits.

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2012-07-12, 10:47	#408
markr "Mark" Feb 2003 Sydney 3·191 Posts	I haven't done any low P-1 for a while, but couldn't resist. Very pleased to find a factor fairly quickly, although it means there will now be a long drought . P-1 found a factor in stage #2, B1=6000000, B2=240000000. M838909 has a factor: 1453468273441466194761003847 28 decimal digits, 91 bits k = 3^2 x 181 x 23117 x 130469 x 176319691

2012-07-12, 18:05	#409
TObject Feb 2012 195₁₆ Posts	M67389481 has a factor: 1543348085740945176727 k = 3^3 * 11 * 82757 * 465887 = 11450956906323

2012-07-12, 18:25	#410
TObject Feb 2012 195₁₆ Posts	M344112403 has a factor: 1042173856480468315151 k = 5^2 * 31 * 103 * 18970157 = 1514292782525

2012-07-13, 04:36	#411
Jwb52z Sep 2002 17×47 Posts	M56309941: P-1 found a factor in stage #1, B1=545000. UID: Jwb52z/Clay, M56309941 has a factor: 21878160101311995365897 It is 74.212 bits which is another one that was narrowly missed by previous work, I guess.

2012-07-13, 13:59	#412
Jwb52z Sep 2002 17·47 Posts	This is just my lucky day M56570351 P-1 found a factor in stage #1, B1=560000. UID: Jwb52z/Clay, M56570351 has a factor: 189058627460533229809313 It's 77.323 bits, so it's another factor that isn't hugely far beyond the previous factoring work.

2012-07-14, 03:00	#414
c10ck3r Aug 2010 Kansas 547₁₀ Posts	M890091977 has a factor: 1966225272665366346285896554164056540033-130.531 bits splits as: M890091977 has a factor: 47183073503648976793-65.359 bits M890091977 has a factor: 41672259279873008681-65.176 bits k=2^23^21746792737 k=2^25313779*12917 Could've been found with ~B1=13k B2=95k or b1=b2=93k

2012-07-16, 17:27	#415
TObject Feb 2012 3⁴×5 Posts	M344112799 has a factor q=321855887896651410431; log2(q)=68.125... k = 5 * 19 * 29 * 31 * 5475797 = 467660442785; log2(k)=38.767...

2012-07-16, 19:41	#416
Jwb52z Sep 2002 17×47 Posts	P-1 found a factor in stage #1, B1=560000. UID: Jwb52z/Clay, M56726627 has a factor: 67204881864680452191371071 It's 85.797 bytes.

2012-07-18, 13:41	#417
Jwb52z Sep 2002 799₁₀ Posts	P-1 found a factor in stage #2, B1=565000, B2=11158750. UID: Jwb52z/Clay, M56907583 has a factor: 7878087690390529790977 This was narrowly missed by TF because the factor is only: 72.738 bits

2012-07-18, 19:16	#418
Jwb52z Sep 2002 17·47 Posts	P-1 found a factor in stage #2, B1=565000, B2=11158750. UID: Jwb52z/Clay, M56929319 has a factor: 26321049935496807610001 74.479 bits.