is 2 2632271 - 1
has 792393 decimal digits
takes 0.203 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26711.288367.1642 %2000000600000000.57797.6876 %11.866269.6885 %
Target2630.606365.0794 %1300010000000.00751.5727 %0.613865.6286 %
Difference+4+10.6820+2.0848 %+1987000+59000000+0.5704+6.1150%+11.2524+4.0599 %

Known prime factors (2 factors, 123.7 bits, 0.00469987% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
263227110573470827673771649.909200843128
23 × 25105391
-8251053914.383e-50.15320.2861
2632271164896678537160228179132373.8043132213182783236
22 × 19 × 41213331352411
2018-03-2919412133313524111,201.1251,469469,675

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2019-07-04alpertronManual testing20000006000000012
skipped known factor: 1057347082767377
---10.615%


Trial Factoring results:
5758596061626364656667
No TF results for M2632271


ECM factoring results:
Total ECM effort:0.302 GHz-days
Estimated T-Level:0.577
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.302


Lucas-Lehmer results:
No L-L results for M2632271


PRP results:
dateuseridcompidcofactorsres64
2017-10-17Oliver KruseGTX-0
1057347082767377
1039E66B0548037B
2017-12-02kkmrkkblmbrbkc4.xlarge
1057347082767377
1039E66B0548037B
2018-03-30Oliver KruseGTX-1
1057347082767377
16489667853716022817913
1039E66B0548037B


CERT results:
No CERT results for M2632271


P-1 factor-bounds graph:
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
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101
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103
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105
106
107
100
101
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105
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109
1010
1011
1012
1013
1014
TF factor-bounds graph:
this exponent TF target: 63
TF double-checked to: 67
ECM T-Level=0.58 ~= -15-bit
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JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00