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Old 2021-11-01, 01:24   #1970
James Heinrich
 
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Quote:
Originally Posted by TheJudger
M114860849 has a 224.754-bit (68-digit) composite (P32+P37) factor: 45453803780256165659829228890363539404384826272845623290616298112337 (P-1,B1=811000,B2=24076000,E=12)
Even just one component of that composite factor is #71 on the biggest P-1 factors list.
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Old 2021-11-04, 16:57   #1971
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M2003191 has a 97.506-bit (30-digits) factor: 225007102354851248019601430113 (P+1, B1=30000000, B2=1620000000)
This is my second factor found using the P+1 method.
This time there is a first factor for this Mersenne number.
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Old 2021-11-05, 05:51   #1972
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P-1 found a factor in stage #2, B1=757000, B2=21023000.
UID: Jwb52z/Clay, M107203427 has a factor: 260429952341275128058663 (P-1, B1=757000, B2=21023000)

77.785 bits.
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Old 2021-11-05, 18:09   #1973
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Quote:
Originally Posted by TheJudger
M114860849 has a 224.754-bit (68-digit) composite (P32+P37) factor: 45453803780256165659829228890363539404384826272845623290616298112337 (P-1,B1=811000,B2=24076000,E=12)
Congratulations, as that's not a very common accomplishment!
In my "merchandise" I have a factor that is a tad smaller 19147642464835832222111776488276027610060674573088897824886038321359 - 223. 506 bits M3146833
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Old 2021-11-05, 19:18   #1974
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P-1 found a factor in stage #1, B1=757000.
UID: Jwb52z/Clay, M107207129 has a factor: 98058773655358447592735572577 (P-1, B1=757000)

96.308 bits.
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Old 2021-11-18, 07:13   #1975
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Found my largest P-1 prime factor to date. 128 bits!

Quote:
[Tue Nov 16 23:14:04 2021]
P-1 found a factor in stage #2, B1=789000, B2=22834000, E=6.
UID: ixfd64/dt-lab-26, M112991353 has a factor: 228447809578680398866569621097916626871 (P-1, B1=789000, B2=22834000, E=6), AID: 89CC27EABD59FDBCBDF20BC67B203E7F

Last fiddled with by ixfd64 on 2021-11-18 at 07:14
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Old 2021-11-18, 07:15   #1976
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Old 2021-11-18, 10:38   #1977
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Quote:
Originally Posted by ixfd64 View Post
Found my largest P-1 prime factor to date. 128 bits!
Nice. But... E=6?! What version of P95 are you using?
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Old 2021-11-18, 12:53   #1978
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Quote:
Originally Posted by axn View Post
Nice. But... E=6?! What version of P95 are you using?
v30.3.6
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Old 2021-11-18, 16:54   #1979
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Time to upgrade?
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Old 2021-11-23, 23:20   #1980
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P-1 found a factor in stage #2, B1=759000, B2=21076000.
UID: Jwb52z/Clay, M107472557 has a factor: 2175775820816119586199479 (P-1, B1=759000, B2=21076000)

80.848 bits.
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