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Old 2021-02-14, 01:23   #1794
Jwb52z
 
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P-1 found a factor in stage #2, B1=739000, B2=19974000.
UID: Jwb52z/Clay, M102606121 has a factor: 286278308342764813608289 (P-1, B1=739000, B2=19974000),

77.922 bits.
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Old 2021-02-14, 22:25   #1795
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M14021941 has a factor: 658712964914137545610873 (P-1, B1=550000, B2=50000000, e=12, n=800K CUDAPm1 v0.22)

Not a very big one, but ...

Brent-Suyama:
P-1 = 658712 964914 137545 610872 = 2^3 × 3 × 23 × 29 × 41 × 67 × 14,021,941 × 1,068,297,817
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Old 2021-02-18, 17:00   #1796
James Heinrich
 
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Quote:
M74297 has a 115.150-bit (35-digit) factor: 46093402217811334422500629825749239 (ECM,B1=3000000,B2=300000000,Sigma=861422999935301)
Not my factor, but has a 98-bit prime k.
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Old 2021-02-25, 15:28   #1797
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M672151 has a 92.364-bit (28-digit) factor: 6371270358962852152708374071 (ECM,B1=250000,B2=25000000,Sigma=1287986895578128)

Is "sigma" a recent addition to the BBcode converter? I don't remember seeing it before.

Last fiddled with by storm5510 on 2021-02-25 at 15:30
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Old 2021-02-25, 15:41   #1798
James Heinrich
 
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Quote:
Originally Posted by storm5510 View Post
Is "sigma" a recent addition to the BBcode converter? I don't remember seeing it before.
I added maybe 3 months ago.
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Old 2021-03-06, 00:06   #1799
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Not big enough for Top 500, but still pretty big!

M102885221 has a 116.736-bit (36-digit) factor: 138350038577290668825510687167523289 (P-1,B1=1200000,B2=73200000)
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Old 2021-03-09, 13:55   #1800
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M32420933 has a 104.770-bit (32-digit) factor: 34588826421437796964455285406873 (P-1,B1=1000000,B2=1000000)

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Old 2021-03-09, 22:15   #1801
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M27133867 has a 103.452-bit (32-digit) factor: 13873846040230053282547473883439 (P-1,B1=1350000)
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Old 2021-03-09, 22:23   #1802
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P-1 found a factor in stage #1, B1=742000.
UID: Jwb52z/Clay, M103030289 has a factor: 123545495958101009290577 (P-1, B1=742000),

76.709 bits.
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Old 2021-03-09, 22:48   #1803
Uncwilly
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User Bruno Victal found a top 500 factor:
7121 has a factor: 981699625212423826313904772778259971143
129.529 bits, 39 digits
k 68929899256594848077089227129494451 = 3 × 7 × 61 × 53809445165179428631607515323571
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Old 2021-03-10, 02:48   #1804
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Code:
M3719987 has a factor: 881990415365354042303 [TF:69:70:mfaktc 0.21 barrett76_mul32_gs]
M3719987 has a factor: 594140183196613372391 [TF:69:70:mfaktc 0.21 barrett76_mul32_gs]
found 2 factors for M3719987 from 2^69 to 2^70 [mfaktc 0.21 barrett76_mul32_gs]
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