Found a factor? Post it here. - Page 123

petrw1 · 2018-12-13, 21:32

Quote:

Originally Posted by lycorn

I did notice it too.
The sub 10K range is one step closer to be cleared (which doesn´t necessarily mean it will ever be...)

1,229 Exponents
22 Prime = 1.79%
1,142 Factored = 92.92%
65 Remaining = 5.29%
1 Factor in the last year; 5 in the last 3 years.

Jwb52z · 2018-12-30, 19:49

P-1 found a factor in stage #2, B1=730000, B2=13505000.
UID: Jwb52z/Clay, M90073891 has a factor: 2050855691794382163177943 (P-1, B1=730000, B2=13505000)\

80.763 bits.

Jwb52z · 2019-01-04, 04:07

P-1 found a factor in stage #2, B1=730000, B2=13505000.
UID: Jwb52z/Clay, M90224503 has a factor: 2988438854649985393367591 (P-1, B1=730000, B2=13505000)

81.306 bits.

Jwb52z · 2019-01-12, 04:54

P-1 found a factor in stage #1, B1=730000.
UID: Jwb52z/Clay, M90297301 has a factor: 477501114214912796207489 (P-1, B1=730000)

78.660 bits.

lycorn · 2019-01-14, 22:37

M921001 has a factor.
It was found by ECM, using B1=250000, B2=25000000. Given that the size of the factor is just over 78 bits, it was missed by the previous trial @ B1=50000. It took 115 curves, tho. Oh well, one down.

axn · 2019-01-15, 02:43

Quote:

Originally Posted by lycorn

M921001 has a factor.
It was found by ECM, using B1=250000, B2=25000000. Given that the size of the factor is just over 78 bits, it was missed by the previous trial @ B1=50000. It took 115 curves, tho. Oh well, one down.

It is a 24-digit factor. A full t25 ECM has about 25% probability of missing such a factor (25% is a ballpark -- I don't know the exact probability).

Jwb52z · 2019-01-24, 05:19

P-1 found a factor in stage #2, B1=680000, B2=12070000.
UID: Jwb52z/Clay, M90532069 has a factor: 2470306454303834603641759 (P-1, B1=680000, B2=12070000)

81.031 bits.

Jwb52z · 2019-01-30, 19:16

P-1 found a factor in stage #2, B1=680000, B2=12070000.
UID: Jwb52z/Clay, M90387127 has a factor: 21114889399427865887545841 (P-1, B1=680000, B2=12070000)

84.126 bits.

Jwb52z · 2019-03-04, 05:36

P-1 found a factor in stage #1, B1=680000.
UID: Jwb52z/Clay, M90729377 has a factor: 35001746371256696847407311 (P-1, B1=680000)

84.856 bits.

newalex · 2019-03-16, 11:13

ECM found a factor in curve #312, stage #2
Sigma=2655318244881862, B1=250000, B2=25000000.
M322939 has a factor: 11174935515705269731353543251549484660209 (ECM curve 312, B1=250000, B2=25000000)

41 digits(133.037 bits) factor was found with ECM bounds for 30-digit factors

lycorn · 2019-03-16, 19:30

You´ve been finding a fair amount of ECM factors for small exponents lately

. I have some experience in working in those small ranges, so I truly appreciate your effort. How many cores have you assigned?

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2018-12-30, 19:49	#1344
Jwb52z Sep 2002 1525₈ Posts	P-1 found a factor in stage #2, B1=730000, B2=13505000. UID: Jwb52z/Clay, M90073891 has a factor: 2050855691794382163177943 (P-1, B1=730000, B2=13505000)\ 80.763 bits.

2019-01-04, 04:07	#1345
Jwb52z Sep 2002 853 Posts	P-1 found a factor in stage #2, B1=730000, B2=13505000. UID: Jwb52z/Clay, M90224503 has a factor: 2988438854649985393367591 (P-1, B1=730000, B2=13505000) 81.306 bits.

2019-01-12, 04:54	#1346
Jwb52z Sep 2002 853 Posts	P-1 found a factor in stage #1, B1=730000. UID: Jwb52z/Clay, M90297301 has a factor: 477501114214912796207489 (P-1, B1=730000) 78.660 bits.

2019-01-14, 22:37	#1347
lycorn "GIMFS" Sep 2002 Oeiras, Portugal 3051₈ Posts	M921001 has a factor. It was found by ECM, using B1=250000, B2=25000000. Given that the size of the factor is just over 78 bits, it was missed by the previous trial @ B1=50000. It took 115 curves, tho. Oh well, one down.

2019-01-24, 05:19	#1349
Jwb52z Sep 2002 853 Posts	P-1 found a factor in stage #2, B1=680000, B2=12070000. UID: Jwb52z/Clay, M90532069 has a factor: 2470306454303834603641759 (P-1, B1=680000, B2=12070000) 81.031 bits.

2019-01-30, 19:16	#1350
Jwb52z Sep 2002 853 Posts	P-1 found a factor in stage #2, B1=680000, B2=12070000. UID: Jwb52z/Clay, M90387127 has a factor: 21114889399427865887545841 (P-1, B1=680000, B2=12070000) 84.126 bits.

2019-03-04, 05:36	#1351
Jwb52z Sep 2002 853₁₀ Posts	P-1 found a factor in stage #1, B1=680000. UID: Jwb52z/Clay, M90729377 has a factor: 35001746371256696847407311 (P-1, B1=680000) 84.856 bits.

2019-03-16, 11:13	#1352
newalex Feb 2019 2⁴ Posts	ECM found a factor in curve #312, stage #2 Sigma=2655318244881862, B1=250000, B2=25000000. M322939 has a factor: 11174935515705269731353543251549484660209 (ECM curve 312, B1=250000, B2=25000000) 41 digits(133.037 bits) factor was found with ECM bounds for 30-digit factors

2019-03-16, 19:30	#1353
lycorn "GIMFS" Sep 2002 Oeiras, Portugal 3051₈ Posts	You´ve been finding a fair amount of ECM factors for small exponents lately . I have some experience in working in those small ranges, so I truly appreciate your effort. How many cores have you assigned?