is 2 370631 - 1
has 111572 decimal digits
takes 0.004 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L0C5A7268CBD0FBB7double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26780.171271.6418 %100000074699925305.734310.7013 %85.905474.6765 %
Target2440.000056.8182 %65009500000.000812.4993 %0.000862.2156 %
Difference+23+80.1712+14.8236 %+993500+7469042530+5.7335-1.7980 %+85.9046+12.4609 %

Known prime factors (1 factor, 99.0 bits, 0.02669862% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3706316136705622189615859932427205373098.953827872684987172667684628
22 × 19 × 29 × 375622815329933152307
2009-09-02293756228153299331523071.732e+112.877e+115.373e+11

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2002-06-15ANONYMOUSv4_computers32768327680012--0.00321.512%
2002-08-24ANONYMOUSv4_computers65536655360012--0.00624.147%
2024-02-17Denial140i5-840010000007469992530--4.97044.742%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-11-24ANONYMOUSv4_computers2522530.002
2000-04-27ANONYMOUSv4_computers212540.006
2022-03-07LordJuliusManual testing254255
2001-03-11ANONYMOUSv4_computers212560.026
2002-02-03ANONYMOUSv4_computers212570.052
2004-01-18ANONYMOUSv4_computers212580.104
2009-01-06Sturle Sundebach.ifi2582590.104
2009-01-24Sturle Sundeinteravia.ifi2592600.207


ECM factoring results:
Total ECM effort:10.445 GHz-days
Estimated T-Level:26.432
DigitsB1CompleteFacMiss
201100023.7830.000%
25500003.0174.892%
302500000.28675.100%
3510000000.02297.835%
4030000000.00199.860%


ECM Summary

B1B2factorcurvesGHz-days
10.028
5000050000002782.862
250000250000001447.555


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-01-02ANONYMOUSv4_computers0C5A7268CBD0FBB70.004


PRP results:
dateuseridcompidcofactorsres64
2017-09-23Oliver KruseDoppelherz
613670562218961585993242720537
CC2D6CBA7A6D3AC4
2017-09-24Oliver KruseManual testing
613670562218961585993242720537
CC2D6CBA7A6D3AC4
2017-11-07kkmrkkblmbrbkc4.xlarge
613670562218961585993242720537
CC2D6CBA7A6D3AC4
2020-04-18Oliver KruseAddPrpType5
613670562218961585993242720537
3E2658E67EAFC2FC


CERT results:
No CERT results for M370631


P-1 factor-bounds graph:
B1 = 1000000, B2 = 7469992530 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 65536, B2 = 6553600 (P-1 stage 2)
B1 = 32768, B2 = 3276800 (P-1 stage 2)
B1 = 65536 (P-1 stage 1)
B1 = 32768 (P-1 stage 1)
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TF factor-bounds graph:
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this exponent TF target: 44
TF double-checked to: 67
ECM T-Level=26.43 ~= 71-bit
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Last modified: 2024-03-03T02:29:32+00:00