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Old 2022-03-19, 11:51   #2091
Dr Sardonicus
 
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Quote:
Originally Posted by lisanderke View Post
I've found three 100+ bits factors yesterday! (the first one is the biggest one I've found so far ) Out of a total of 6 factors found yesterday in this range, and 4 so far today.
108.509 bits 461809633522436002942667757126991
105.164 bits 45433175071599793822345482321409
and 101.612 bits 3876227996028611127615928931137
All prime factors. Exponents 397849, 397921, and 397763 respectively. Nice!
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Old 2022-03-20, 04:46   #2092
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P-1 found a factor in stage #2, B1=470000, B2=13239000.
UID: Jwb52z/Clay, M111561421 has a factor: 292165419952881010847303 (P-1, B1=470000, B2=13239000)

77.951 bits.
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Old 2022-03-20, 14:03   #2093
lisanderke
 
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P-1 found a factor in stage #2, B1=5550000, B2=25042991610.
UID: lisander/Desktop, M264577 has a factor: 2402275378448533966401395387089 (P-1, B1=5550000, B2=25042991610)

100.922 bits,

P-1 found a factor in stage #2, B1=5550000, B2=25042991610.
UID: lisander/Desktop, M264949 has a factor: 6338247571356035076996173356273 (P-1, B1=5550000, B2=25042991610)

102.322 bits and

P-1 found a factor in stage #2, B1=5550000, B2=25042991610.
UID: lisander/Desktop, M265261 has a factor: 20805253139081811010440552183169 (P-1, B1=5550000, B2=25042991610)

104.037 bits!

Last fiddled with by lisanderke on 2022-03-20 at 14:17
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Old 2022-03-20, 17:21   #2094
lisanderke
 
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Today I keep getting bigger factors! The second one marks my biggest P-1 factor found result yet :D

P-1 found a factor in stage #2, B1=5550000, B2=22789551330.
UID: lisander/Desktop, M270587 has a factor: 11390997669503257588498195779889 (P-1, B1=5550000, B2=22789551330)

103.168 bits and

P-1 found a factor in stage #2, B1=5550000, B2=25042991610.
UID: lisander/Desktop, M267803 has a factor: 2453115957213008539833758634913543 (P-1, B1=5550000, B2=25042991610)

110.918 bits!
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Old 2022-03-24, 22:46   #2095
mrh
 
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M111744023 has a 90.093-bit (28-digit) factor: 1320668811711078898367468881 (P-1,B1=510000,B2=18454000)

Not that exciting, but I wanted to share something
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Old 2022-03-26, 05:11   #2096
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M19414627 has a factor: 259213687242140687678761255384193 (107.676 bits)

My largest factor in the last few months and it was found in stage 1 with B1=800,000!
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Old 2022-03-31, 00:13   #2097
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P-1 found a factor in stage #2, B1=474000, B2=13535000.
UID: Jwb52z/Clay, M113023661 has a factor: 1708323868535427894994746353 (P-1, B1=474000, B2=13535000)

90.465 bits.
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Old 2022-03-31, 20:00   #2098
Jan S
 
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Default P-1 found a factor in stage 1

113076559

B1=1230000, 229904281138151649356554790047, 97.537 bits.
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Old 2022-04-03, 00:53   #2099
petrw1
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Default 3 consecutive P-1 factors from same PC

Speck 14722069 F-PM1 2022-04-03 00:42 0.0 Factor: 350629376069681599185084001 / (P-1, B1=1700000, B2=616212870) 27.8934
Speck 14722031 F-PM1 2022-04-02 22:31 0.0 Factor: 7249170428405224821889 / (P-1, B1=1700000, B2=616212870) 27.8934
Speck 14719489 F-PM1 2022-04-02 20:20 0.0 Factor: 7636005682848927790894801 / (P-1, B1=1700000, B2=616212870) 27.8934
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Old 2022-04-04, 13:50   #2100
storm5510
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This is from GMP-ECM, and an error on my part:

Code:
********** Factor found in step 2: 223
2022-04-04 09:43:03.243 Found prime factor of 3 digits: 223
2022-04-04 09:43:03.243 Composite cofactor (2^7363-1)/223 has 2215 digits
This is for M7363 which does not appear in any database I can find. I had intended M4363. Make of it what you will.
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Old 2022-04-04, 13:55   #2101
James Heinrich
 
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Quote:
Originally Posted by storm5510 View Post
This is for M7363 which does not appear in any database I can find.
7363 is not prime, therefore it's not a Mersenne number.
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