is 2 267373 - 1
has 80488 decimal digits
takes 0.002 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actualunknown2000000018200000001.169951.1527%1.169951.1527%51.1527%
PrimeNet2400.000052.5000%2800700000.000114.4594%0.000159.3682%6.8682%
GPU722440.000056.8182%50001200000.000110.5964%0.000161.3939%4.5757%
Difference-440.0000-56.8182%+19995000+1819880000+1.1698+40.5563%+1.1697-10.2412%-10.2412%

Known prime factors (2 factors, 125.1 bits, 0.04677388% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
26737368597216891032.67612828
22 × 3 × 1069
-410693.802e-96.146e-71.074e-6
26737364672926784858301856301921032892.38512094139420371223320287
3 × 7 × 13 × 7529 × 39292609 × 149749079
2020-04-02392926091497490794.212e+90.44900.7923

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
2673734436382785572015300353832490218562196738125.061
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-07-03T16:08:53George WoltmanManual testing200000001820000000-
skipped known factor: 6859721689
--1.170--42.670%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-07-03T16:08:53George WoltmanManual testing1000000083000000027--0.506


Trial Factoring results:
No TF results for M267373


ECM factoring results:

Old Calculation Method

Total ECM effort:8.985 GHz-days
Estimated T-Level:26.469
DigitsB1CurvesCompleteFacMiss
2011000469 / 1004.6900.897%
2550000469 / 2801.67518.675%
30250000188 / 6400.29474.529%

New Calculation Method

Total ECM effort:8.985 GHz-days
Estimated T-Level:26.469
DigitsB1CompleteFacMiss
201100024.7310.000%
25500003.0914.547%
302500000.29674.398%
3510000000.02397.755%
4030000000.00199.855%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002812.051
250000250000001495.436
25000025000000250.912
2500003525000070.290
2500003675000070.295


Lucas-Lehmer results:
No L-L results for M267373


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-22T09:24:02Oliver KruseOllaptop
6859721689
7EAE68DDC07344__no
2017-09-22T10:07:19Oliver KruseManual testing
6859721689
7EAE68DDC07344__no
2017-10-12T18:06:14Oliver KruseGTX-27EAE68DDC07344__no
2017-11-06T16:57:39kkmrkkblmbrbkc4.xlarge
6859721689
7EAE68DDC07344__no
2020-04-03T09:01:06treborLaptop
6859721689
6467292678485830185630192103
E4CE40EF9A4A515Dno
2020-04-03T11:48:31mnd9mnd
6859721689
6467292678485830185630192103
E4CE40EF9A4A515Dno
2020-04-03T17:39:58Daniil Tsarkov9900
6859721689
6467292678485830185630192103
E4CE40EF9A4A515Dno
2020-04-05T20:00:31Luigi Morelli9800X
6859721689
6467292678485830185630192103
E4CE40EF9A4A515Dno


P-1 factor-bounds graph:
B1 = 20000000, B2 = 1820000000 (P-1 stage 2)
B1 = 20000000 (P-1 stage 1)
100
101
102
103
104
105
106
107
108
100
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
230
240
250
260
270
280
290
2100
Last modified: 2022-05-25T06:10:00+00:00