is 2 307919 - 1
has 92693 decimal digits
takes 0.002 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
Actualunknown50000500000.000515.0079%0.000515.0079%15.0079%
PrimeNet2400.000052.5000%3200900000.000115.6221%0.000159.9205%7.4205%
GPU722440.000056.8182%55001500000.000111.4350%0.000161.7560%4.9378%
Difference-440.0000-56.8182%+44500-100000+0.0004+3.5729%+0.0004-46.7481%-46.7481%

Known prime factors (2 factors, 120.1 bits, 0.03899545% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
30791912932599823.62521
3 × 7
-373.646e-123.318e-86.295e-8
3079191082212652613459395727266350393096.450175730086908157566718401
3 × 13 × 41 × 251 × 45776407 × 9564939707
2021-10-194577640795649397076.521e+105.819710.036

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
307919139958222689761723677230490757873636137120.074
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-02-06T16:52:03Lisander ViaeneManual testing5000050000-
skipped known factor: 12932599
--0.001--9.791%


Trial Factoring results:
No TF results for M307919


ECM factoring results:

Old Calculation Method

Total ECM effort:16.478 GHz-days
Estimated T-Level:27.688
DigitsB1CurvesCompleteFacMiss
2011000625 / 1006.2500.187%
2550000625 / 2802.23210.687%
30250000344 / 6400.53858.396%

New Calculation Method

Total ECM effort:16.478 GHz-days
Estimated T-Level:27.688
DigitsB1CompleteFacMiss
201100037.7310.000%
25500005.0540.638%
302500000.50960.083%
3510000000.04096.050%
4030000000.00399.737%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002812.145
250000250000001445.497
250000367500001566.892
25000036750000441.944


Lucas-Lehmer results:
No L-L results for M307919


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-22T16:03:02Oliver KruseOllaptop
12932599
D79DA40B93FDAB__no
2017-09-22T20:37:32Oliver KruseManual testing
12932599
D79DA40B93FDAB__no
2017-10-12T22:49:54Oliver KruseGTX-0D79DA40B93FDAB__no
2017-12-11T10:53:54ATHxps
12932599
D79DA40B93FDAB__no
2020-04-18T15:02:39Oliver KruseAddPrpType5
12932599
B4FD474F67BB94__no
2021-10-19T05:04:23SRJ2877LTOS
12932599
108221265261345939572726635039
B4FD474F67BB94FFno


P-1 factor-bounds graph:
B1 = 50000 (P-1 stage 1)
100
101
102
103
104
105
106
107
108
100
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
220
230
240
250
260
270
280
290
2100
Last modified: 2022-02-06T16:52:03+00:00