is 2 1964659 - 1
has 591422 decimal digits
takes 0.107 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-daysProbabilityProb over default TF
Actual26715.124268.6567%6500007304524923.17899.3233%18.303171.5789%2.9222%
PrimeNet2580.019563.7931%80001400000.00122.4703%0.020764.6875%0.8944%
GPU722620.312766.1290%8000900000.00101.1550%0.313766.5202%0.3912%
Difference+5+14.8115+2.5277%+642000+730362492+3.1779+8.1684%+17.9894+5.0587%+2.5310%

Known prime factors (3 factors, 198.8 bits, 0.01011896% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1964659113950223926.76429
29
-1294.579e-121.987e-71.987e-7
196465921422013045131340.962545184
25 × 33 × 631
2008-07-15326317.494e-85.084e-65.123e-6
1964659287158295024694570802146987807662090763140131.077730809506954373687245845176714285
3 × 5 × 73 × 11 × 619 × 1913 × 10453 × 16339 × 418961 × 152398427
2022-10-314189611523984278.985e+100.68431.2199

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
19646592441043163601472563992167.726
196465932721751754363736849793938139461376351101485171348157.841
196465961515087420362962712174791810274723676940982764387
03
52172.039
196465970096579294148543419930023417593784542508049438410
5852680769
60198.803
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-08-12T04:55:46harleei5-5250U_1600132000134381520-
skipped known factor: 113950223
skipped known factor: 2142201304513
--0.586--5.863%
2022-10-31T18:52:51harleei5-5250U_160065000073045249240131.0773.1790.2136.3589.323%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-07-15T07:48:00J FeitsmaManual testing??40.962133.87298e-100.2368.58029e-10


ECM factoring results:
Total ECM effort:20.969 GHz-days
Estimated T-Level:25.319
DigitsB1CompleteFacMiss
201100010.6130.002%
25500001.00236.697%
302500000.06493.811%
3510000000.00399.700%


ECM Summary

B1B2factorcurvesGHz-days
500005000000392.716
50000570000070.515
50000750000021217.74


Lucas-Lehmer results:
No L-L results for M1964659


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-05T09:02:34Oliver KruseGTX-0
113950223
2142201304513
504FEFA7102AE7__no
2017-11-11T21:40:52ATHec2-1xf
113950223
2142201304513
504FEFA7102AE7__no
2022-10-31T19:18:00Kevin_9611PRP-CF
113950223
2142201304513
2871582950246945708021469878076620907631
A48CAB7156E3A652no


P-1 factor-bounds graph:
B1 = 650000, B2 = 730452492 (P-1 stage 2)
B1 = 132000, B2 = 134381520 (P-1 stage 2)
B1 = 650000 (P-1 stage 1)
B1 = 132000 (P-1 stage 1)
100
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105
106
100
101
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109
TF factor-bounds graph:
267
2
220
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2100
2110
2120
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2140
Last modified: 2022-10-31T19:18:00+00:00