is 2 3195319 - 1
has 961887 decimal digits
takes 0.272 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26818.653867.6471%10585941199121000.92987.5520%19.583670.0904%2.4433%
PrimeNet2600.048163.3333%130002400000.00312.6567%0.051264.3075%0.9741%
GPU722641.113965.6250%160002600000.00361.6153%1.117566.1802%0.5552%
Difference+4+17.5399+2.0221%+1042594+119652100+0.9262+5.9368%+18.4661+3.9101%+3.9101%

Known prime factors (2 factors, 123.2 bits, 0.00385488% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
319531945096495642711342.036705665
5 × 107 × 1319
-10713193.193e-72.135e-52.687e-5
319531926637216302013402773472492581.140416816228708517096
23 × 35 × 1852663 × 115731593
2018-08-251852663115731593222,1360.99431.4534

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
31953191201245108897671197573922374461054047938123.176
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-01-16T12:15:12Jocelyn LaroucheManual testing31953131953196-
skipped known factor: 4509649564271
--0.059--3.363%
2022-01-11T13:35:10Jocelyn LaroucheManual testing1058594119912100-
skipped known factor: 4509649564271
--0.930--7.552%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2021-01-08T11:34:58Jocelyn LaroucheManual testing265266--2.339--
2022-04-02T15:56:49LordJuliusManual testing266267--4.677--
2021-04-12T21:50:41Jocelyn LaroucheManual testing267268--9.355--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.470 GHz-days
Estimated T-Level:0.200
DigitsB1CurvesCompleteFacMiss
20110004 / 1000.04096.060%
25500004 / 2800.01498.579%

New Calculation Method

Total ECM effort:0.470 GHz-days
Estimated T-Level:0.200
DigitsB1CompleteFacMiss
20110000.15485.740%
25500000.01498.587%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.352
50000500000010.117


Lucas-Lehmer results:
No L-L results for M3195319


PRP results:
dateuseridcompidcofactorsres64PRP
2017-11-01T11:07:38Oliver KruseGTX-2
4509649564271
BB2A3DEBDDC50E__no
2017-12-13T03:08:45kkmrkkblmbrbkc4.xlarge
4509649564271
BB2A3DEBDDC50E__no
2018-08-26T00:24:58ATHec2-PRPCF
4509649564271
2663721630201340277347249
BB2A3DEBDDC50E__no


P-1 factor-bounds graph:
B1 = 1058594, B2 = 119912100 (P-1 stage 2)
B1 = 1058594 (P-1 stage 1)
B1 = 319531, B2 = 3195319 (P-1 stage 2)
B1 = 319531 (P-1 stage 1)
101
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103
104
105
106
107
101
102
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104
105
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107
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109
TF factor-bounds graph:
268
267
266
240
250
260
270
280
290
2100
Last modified: 2022-04-02T15:56:49+00:00