is 2 3403021 - 1
has 1024412 decimal digits
takes 0.357 GHz-days to do one PRP test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-LA7AD28A0B1A54EBDdouble-checked
PRP633F13AE4F0BC628double-checked

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26935.082668.1159%150000007500000008.382811.0347%43.465479.1507%15.8174%
PrimeNet2600.045163.3333%140002800000.00432.8477%0.049566.1810%2.8477%
GPU722641.045965.6250%190003200000.00541.8195%1.051367.4445%1.8195%
Difference+5+34.0367+2.4909%+14981000+749680000+8.3774+9.2152%+42.4141+11.7062%+11.7062%

Known prime factors (1 factor, 122.3 bits, 0.00359318% known):
Remaining cofactor is not a probable-prime

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
3403021644051128550202775188975183549177067937122.277946293203230604182561575705159
3 × 97 × 233 × 30089 × 920233 × 14791859 × 34075991
14791859340759912021-03-305.234e+102.41274.5845

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-07-03T21:44:00Carsten Kossendeyleela15000206250---0.004--0.693%
2011-10-27T14:12:00markrtiny2250005737500---0.080--3.311%
2020-02-08T17:38:49BigBrotherWinston30000009000000012---1.179--7.363%
2021-03-30T11:36:30axnManual testing1500000075000000037122.2778.3830.71516.7711.035%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-09-06T00:00:00ANONYMOUSv4_computers?260--0.023--
2009-03-26T05:53:00S485122USB-Z260261--0.045--
2011-08-12T19:54:00Grant McCrackenthumper261262--0.090--
2012-08-18T15:30:00GrunwalderGIMPManual testing21263--0.469--
2016-02-23T16:29:28Mark RoseManual testing262263--0.288--
2015-01-30T19:15:00VictordeHollanderManual testing263264--0.577--
2015-01-30T19:15:00VictordeHollanderManual testing264265--1.098--
2015-04-06T18:28:00Gordon SpenceManual testing265266--2.196--
2017-01-26T16:57:42Gordon SpenceManual testing266267--4.392--
2019-02-18T10:31:23TJAOIManual testing267268--8.784--
2020-12-25T16:36:23axnManual testing268269--17.57--


ECM factoring results:
Total ECM effort:3.226 GHz-days
Estimated T-Level:1.100
DigitsB1CurvesCompleteFacMiss
201100022 / 1000.22080.163%
255000022 / 2800.07992.431%

ECM Summary

B1B2factorcurvesGHz-days
500005000000223.226


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-12-08T00:00:00ANONYMOUSv4_computersA7AD28A0B1A54EBD0.357


PRP results:
dateuseridcompidcofactorsres64PRP
2021-03-31T18:56:12Chad SteenersonLaura072713
6440511285502027751889751835491770679
633F13AE4F0BC628no


P-1 factor-bounds graph:
B1 = 15000000, B2 = 750000000 (stage 2)
B1 = 15000000 (stage 1)
B1 = 3000000, B2 = 90000000 (stage 2)
B1 = 3000000 (stage 1)
B1 = 225000, B2 = 5737500 (stage 2)
B1 = 225000 (stage 1)
B1 = 15000, B2 = 206250 (stage 2)
B1 = 15000 (stage 1)
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TF factor-bounds graph:
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Last modified: 2021-03-31T18:56:12+00:00