is 2 2095099 - 1
has 630688 decimal digits
takes 0.138 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L830FB4DC78A623DFdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26828.449769.1176%25000001250000000.87467.8965%29.324371.5563%2.4386%
PrimeNet2580.018363.7931%90001600000.00162.6766%0.020064.7622%0.9691%
GPU722620.293266.1290%90001400000.00151.4010%0.294866.6036%0.4745%
Difference+6+28.1564+2.9886%+2491000+124860000+0.8731+6.4955%+29.0295+4.9527%+4.9527%

Known prime factors (1 factor, 108.3 bits, 0.00517010% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
209509940471981125864847279456664959795933108.31996587276128395000139508121
32 × 7 × 701 × 5620907 × 389094374125081
2021-03-1256209073890943741250818.091e+102,021,0543,774,765

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-02-27T00:00:00ANONYMOUSv4_computers2048204800---0.001--0.223%
2009-07-27T06:40:00harleeP4_260020000260000---0.003--0.877%
2010-12-28T23:08:00Jocelyn LaroucheManual testing3000030000---0.003--0.351%
2011-01-09T14:30:00Jocelyn LaroucheManual testing5000050000---0.005--0.510%
2011-01-22T10:08:00James HeinrichQ66001400003150000---0.029--2.794%
2016-07-27T10:56:35Jocelyn LaroucheManual testing186340630000012---0.050--3.411%
2016-11-05T16:28:43Jocelyn Larouchelow 4M223608223608---0.021--1.240%
2016-11-10T03:36:30Jocelyn Larouchelow 4M268329268329---0.026--1.358%
2017-05-24T17:32:48mikrMSI250000012500000012---0.875--7.896%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-01-17T00:00:00ANONYMOUSv4_computers21258--0.018--
2016-02-23T16:29:05Mark RoseManual testing258260--0.055--
2009-01-02T20:39:00Sturle Sundenardi.ifi260261--0.073--
2012-03-23T22:48:00Sebastian HornbostelManual testing261262--0.147--
2013-09-04T10:21:00ramgeisManual testing262263--0.469--
2015-04-10T15:56:00VictordeHollanderManual testing263264--0.937--
2015-04-10T15:56:00VictordeHollanderManual testing264265--1.783--
2015-11-02T09:33:36ramgeisManual testing265266--3.567--
2016-09-22T02:15:58Gordon SpenceManual testing266267--7.134--
2019-04-01T03:15:25chuenkitManual testing267268--14.27--


ECM factoring results:

Old Calculation Method

Total ECM effort:13.941 GHz-days
Estimated T-Level:22.893
DigitsB1CurvesCompleteFacMiss
2011000162 / 1001.62019.629%
2550000162 / 2800.57956.012%

New Calculation Method

Total ECM effort:13.941 GHz-days
Estimated T-Level:22.893
DigitsB1CompleteFacMiss
20110006.2590.191%
25500000.58055.973%
302500000.03796.396%
3510000000.00299.828%


ECM Summary

B1B2factorcurvesGHz-days
50000500000015913.53
50000500000020.170
766202417689010.245


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-02-21T00:00:00ANONYMOUSv4_computers830FB4DC78A623DF0.138
2017-06-13T00:16:33kkmrkkblmbrbkc4.large830FB4DC78A623DF0.138


PRP results:
dateuseridcompidcofactorsres64PRP
2021-03-12T21:54:30Alex Kruppalily
404719811258648472794566649597959
9DED9BE326F2EC__no
2021-03-13T11:06:34MarkSdesktop-i7
404719811258648472794566649597959
9DED9BE326F2EC83no


P-1 factor-bounds graph:
B1 = 2500000, B2 = 125000000 (P-1 stage 2)
B1 = 2500000 (P-1 stage 1)
B1 = 186340, B2 = 6300000 (P-1 stage 2)
B1 = 140000, B2 = 3150000 (P-1 stage 2)
B1 = 268329 (P-1 stage 1)
B1 = 223608 (P-1 stage 1)
B1 = 186340 (P-1 stage 1)
B1 = 140000 (P-1 stage 1)
B1 = 50000 (P-1 stage 1)
B1 = 20000, B2 = 260000 (P-1 stage 2)
B1 = 30000 (P-1 stage 1)
B1 = 20000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-03-13T11:06:34+00:00