is 2 287873 - 1
has 86659 decimal digits
takes 0.002 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
Actual267103.218871.6418%----103.218871.6418%19.1418%
PrimeNet2400.000052.5000%3000800000.000115.0690%0.000159.6578%7.1578%
GPU722440.000056.8182%50001300000.000110.8838%0.000161.5180%4.6998%
Difference+23+103.2188+14.8236%-5000-130000-0.0001-10.8838%+103.2187+10.1238%+10.1238%

Known prime factors (2 factors, 150.8 bits, 0.05236927% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
287873144031819857167031753.67725016555887
17 × 347 × 4240813
2014-04-2334742408130.00810.00230.0043
2878731674608718627580475845711038713097.080290858941030867861148095
5 × 7162339 × 55539811 × 146235611
2021-04-22555398111462356111.780e+110.59931.1200

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
287873241196941292608981263052156820435582779265731346150.757
P-1 results:
Exponent "287873" not found


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-04-22T06:48:35nordisweet1610000000100000000027P+13097.0800.688


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-05-05T00:00:00ANONYMOUSv4_computers??53.677170.0040.0040.008
2003-08-25T00:00:00ANONYMOUSv4_computers??53.677170.0040.0040.008
1999-11-24T00:00:00ANONYMOUSv4_computers252253--0.002--


ECM factoring results:
Total ECM effort:9.153 GHz-days
Estimated T-Level:26.516
DigitsB1CurvesCompleteFacMiss
2011000475 / 1004.7500.845%
2550000475 / 2801.69618.278%
30250000194 / 6400.30373.833%

ECM Summary

B1B2factorcurvesGHz-days
5000050000002812.056
250000250000001947.097


Lucas-Lehmer results:
Exponent "287873" not found


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-22T12:40:14Oliver KruseOllaptop
14403181985716703
E41FCB025B0307__no
2017-09-22T20:36:28Oliver KruseManual testing
14403181985716703
E41FCB025B0307__no
2017-10-12T19:51:36Oliver KruseGTX-0E41FCB025B0307__no
2017-11-06T20:36:26kkmrkkblmbrbkc4.xlarge
14403181985716703
E41FCB025B0307__no
2020-04-17T22:10:36Oliver KruseAddPrpType5
14403181985716703
C41AD44C2A39E4__no
2021-04-22T16:30:39RichD0Linux-0
14403181985716703
167460871862758047584571103871
C41AD44C2A39E492no


P-1 factor-bounds graph:
101
102
103
104
105
106
107
108
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
267
253
2
250
260
270
280
290
2100
Last modified: 2021-04-22T16:30:39+00:00