is 2 803273 - 1
has 241810 decimal digits
takes 0.016 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- L-L tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26736.991170.1493%20000001620000000.31047.9330%37.301472.5173%2.3681%
PrimeNet2400.000050.0000%70003000000.000722.3218%0.000761.1609%11.1609%
GPU722440.000054.5455%130005000000.001117.1263%0.001162.3302%7.7847%
Difference+23+36.9911+15.6038%+1987000+161500000+0.3092-9.1933%+37.3003+10.1872%+10.1872%

Known prime factors (3 factors, 204.1 bits, 0.02541462% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
803273449832881928.745280
23 × 5 × 7
-884.722e-112.317e-74.715e-7
803273469793343864359111755.38329242445835
3 × 5 × 1949496389
2015-07-20519494963890.01033.07595.7450
803273134876642230743963292132453295533944137120.021839544228616821200837899775640
23 × 33 × 5 × 17 × 751 × 2383 × 2969 × 7411 × 9133 × 127147099
2021-07-0291331271470992.200e+110.20090.3747

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
803273211328493345128331669895912684.128
80327360671948554261823781058186099527978507795952145148.766
80327363364148762778038330434457581560535901358413197065
751
53175.404
80327328503277590073030545707762035585668340411986822024
507518758631
62204.149
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-17T18:52:04alpertronManual testing3000001000000012---0.024--3.950%
2021-07-02T19:41:16Dylan Delgadodesktoplinux200000016200000037120.0210.3100.0320.6217.933%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2015-01-22T13:07:00TJAOIManual testing25525655.383170.0040.0340.009


ECM factoring results:

Old Calculation Method

Total ECM effort:11.449 GHz-days
Estimated T-Level:25.344
DigitsB1CurvesCompleteFacMiss
2011000325 / 1003.2503.815%
2550000325 / 2801.16131.261%
3025000044 / 6400.06993.351%

New Calculation Method

Total ECM effort:11.449 GHz-days
Estimated T-Level:25.344
DigitsB1CompleteFacMiss
201100012.7310.000%
25500001.34925.941%
302500000.10889.793%
3510000000.00799.295%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002816.422
25000025000000445.028


Lucas-Lehmer results:
Exponent "803273" not found


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-28T01:21:28Oliver KruseGTX-1
449832881
46979334386435911
DBBCCBD3543254__no
2017-10-13T23:24:19Oliver KruseThreadripperDBBCCBD3543254__no
2017-12-18T00:20:39ATHec2-1xf
449832881
46979334386435911
DBBCCBD3543254__no
2020-04-21T07:03:30Oliver KruseAddPrpType5
449832881
46979334386435911
A7438CAA181F31__no
2021-07-04T15:03:45kutenscanopus
449832881
46979334386435911
1348766422307439632921324532955339441
A7438CAA181F3157no


P-1 factor-bounds graph:
B1 = 2000000, B2 = 162000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
B1 = 300000, B2 = 10000000 (P-1 stage 2)
B1 = 300000 (P-1 stage 1)
100
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107
100
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104
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1010
TF factor-bounds graph:
267
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220
230
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2130
Last modified: 2021-07-04T15:03:45+00:00