is 2 3500779 - 1
has 1053840 decimal digits
takes 0.368 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
Actual26817.026267.6471%30000002730000002.69719.4110%19.723370.6918%3.0447%
PrimeNet2600.043963.3333%150003000000.00462.9606%0.048564.4189%1.0855%
GPU722641.016765.6250%200003600000.00591.9155%1.022666.2834%0.6584%
Difference+4+16.0095+2.0221%+2980000+272640000+2.6912+7.4955%+18.7007+4.4084%+4.4084%

Known prime factors (3 factors, 134.9 bits, 0.00385207% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3500779287063879928.09741
41
-1411.031e-114.842e-76.282e-7
35007795602086586971239.02780012
22 × 83 × 241
2008-09-07832412.759e-81.395e-52.572e-5
35007792445356138724915598312167.72934925885620385
5 × 37 × 188788570921
2022-01-133718878857092110.6041,566.42,925.6

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
35007791608156706149479056632167.124
3500779701973418718836385598474444492995.825
350077913699096825115600271837783400020733106.756
35007793932515873414268837447208561571750822295341134.853
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-03-24T18:20:55ViliamF33000000273000000-
skipped known factor: 287063879
skipped known factor: 560208658697
--2.697--9.411%
2022-03-25T11:24:39Jocelyn LaroucheManual testing1000000123342450-
skipped known factor: 287063879
skipped known factor: 560208658697
--1.167--7.610%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-07T19:49:00Will EdgingtonManual testing??39.027126.66553e-90.7911.43355e-8
2022-01-13T18:44:35Jocelyn LaroucheManual testing267268
skipped known factors(?)
--8.538--
2022-01-13T18:44:35Jocelyn LaroucheManual testing26726867.729212.1160.7474.299


ECM factoring results:

Old Calculation Method

Total ECM effort:0.442 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

New Calculation Method

Total ECM effort:0.442 GHz-days
Estimated T-Level:0.150
DigitsB1CompleteFacMiss
20110000.09790.776%
25500000.00999.129%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.442


Lucas-Lehmer results:
No L-L results for M3500779


PRP results:
dateuseridcompidcofactorsres64PRP
2017-11-07T18:46:24Oliver KruseGTX-0
287063879
560208658697
FE3802074D4B82__no
2017-12-17T03:06:34kkmrkkblmbrbkc4.xlarge
287063879
560208658697
FE3802074D4B82__no
2022-02-03T14:41:04RichD0Linux-5
287063879
560208658697
244535613872491559831
FE3802074D4B8258no


P-1 factor-bounds graph:
B1 = 3000000, B2 = 273000000 (P-1 stage 2)
B1 = 1000000, B2 = 123342450 (P-1 stage 2)
B1 = 3000000 (P-1 stage 1)
B1 = 1000000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-03-25T11:24:39+00:00