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Old 2013-05-20, 16:23   #705
TheJudger
 
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P-1 found a factor in stage #2, B1=565000, B2=11300000, E=12.
M63002441 has a factor: 953932238319893668783144584783757609
119.52 Bits, k = 7570597449707493625390995444 = 2 * 2 * 3 * 13 * 17 * 97 * 3617 * 538309 * 553591 * 27303337
Two factors of k relative close to B1 and biggest factor is bigger than B2.
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Old 2013-05-27, 14:50   #706
Uncwilly
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62,169,979 has a factor 226428072746995453563084311
87.5 bits
k = 1821040286558528945 = 5 × 72 × 13 × 53 × 139 × 36307 × 2137613

This is my largest P-1 factor to date.

That would take about 1,000,000 GHZ-days to find by TF.

Last fiddled with by Uncwilly on 2013-05-27 at 15:27
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Old 2013-06-03, 22:12   #707
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P-1 found a factor in stage #2, B1=555000, B2=10128750.
UID: Jwb52z/Clay, M63213691 has a factor: 52307699147199830633280367

85.435 bits.

Last fiddled with by Jwb52z on 2013-06-03 at 22:12
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Old 2013-06-05, 12:08   #708
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My personal record when factoring numbers using p-1 factorization method with B1 = 1E8, B2 = 2E9:

P-1 found a factor in stage #1, B1=100000000.
M155593 has a factor: 4247323922446492583452740413013704916736271 (43 digits, 142 bits)
k = 5 × 11 × 263 × 32029 × 8985259 × 9974369 × 12474779 × 26350243

Other numbers I factored in these months:

P-1 found a factor in stage #2, B1=100000000, B2=2000000000.
M102679 has a factor: 2744975274947255820412194963218834106959 (40 digits, 132 bits)
k = 71 × 379 × 587 × 49613 × 3386321 × 9968291 × 505297129

P-1 found a factor in stage #1, B1=100000000.
M108037 has a factor: 2659318887552342437437656530777 (31 digits, 102 bits)
k = 22 × 31 × 53 × 541 × 137519 × 306253 × 82192091

P-1 found a factor in stage #2, B1=100000000, B2=2000000000.
M117389 has a factor: 25749024821993900865427892170493479 (35 digits, 115 bits)
k = 3 × 11 × 367 × 523 × 2601479 × 34033411 × 195567143

P-1 found a factor in stage #2, B1=100000000, B2=2000000000.
M135589 has a factor: 105826292535683576686158235284991 (33 digits, 107 bits)
k = 3 × 5 × 653 × 2794747 × 84185609 × 169337963

P-1 found a factor in stage #2, B1=100000000, B2=2000000000.
M136541 has a factor: 537463051681721014332364070098936513 (36 digits, 119 bits)
k = 25 × 33 × 401 × 419 × 816163 × 46676789 × 355881593

P-1 found a factor in stage #2, B1=100000000, B2=2000000000.
M139297 has a factor: 9613076954753953947405277318203433 (34 digits, 113 bits)
k = 22 × 33 × 43133 × 1949777 × 4577627 × 829911713

P-1 found a factor in stage #2, B1=100000000, B2=2000000000.
M152837 has a factor: 450388871063681619598608095357068201 (36 digits, 119 bits)
k = 22 × 3 × 52 × 11 × 1997 × 30107141 × 67191323 × 110523451
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Old 2013-06-05, 23:25   #709
Uncwilly
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Quote:
Originally Posted by Uncwilly View Post
87.5 bits
This is my largest P-1 factor to date.
Just improved my best:
62,364,539 has a factor of 47534549460523374611238927191
95.26 bits

77,193,886 GHz-days equivalent
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Old 2013-06-10, 00:19   #710
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P-1 found a factor in stage #2, B1=555000, B2=10128750.
UID: Jwb52z/Clay, M63291077 has a factor: 17783016602757827209035241

83.879 bits.
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Old 2013-06-10, 13:34   #711
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P-1 found a factor in stage #1, B1=555000.
UID: Jwb52z/Clay, M63329501 has a factor: 207464635789020822879967361

87.423 bits.
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Old 2013-06-12, 22:48   #712
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P-1 found a factor in stage #2, B1=560000, B2=10220000.
UID: Jwb52z/Clay, M63696319 has a factor: 4395293756140552304660737

81.862 bits.
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Old 2013-06-13, 22:33   #713
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P-1 found a factor in stage #1, B1=570000.
UID: Jwb52z/Clay, M64148143 has a factor: 29021320685309832966743

74.620 bits.
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Old 2013-06-14, 20:23   #714
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Finally I found a factor worth mentioning.

P-1 found a factor in stage #2, B1=900000, B2=18675000.
UID: Axelsson/Sheep, M61837247 has a factor: 75632258275165820527461039919

log(f)/log(2)=95.93 => 96 bit !

75632258275165820527461039919-1 = 2 · 3 · 179 · 293 · 2657 · 245039 · 5969779 · 61837247



Göran
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Old 2013-06-15, 23:35   #715
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P-1 found a factor in stage #2, B1=575000, B2=10350000.
UID: Jwb52z/Clay, M64203229 has a factor: 1575354354539556339164152433

90.348 bits.
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