is 2 245129 - 1
has 73792 decimal digits
takes 0.001 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actualunknown30000000101202470268904,486.311463.0868%4,486.311463.0868%
Target2440.000059.0909%45005500000.000310.1294%0.000363.2348%
Difference-440.0000-59.0909%+29995500+10120246476890+4,486.3111+52.9574%+4,486.3111-0.1480%

Known prime factors (2 factors, 110.5 bits, 0.04509679% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2451291961033720.9034
22
-445.704e-133.254e-86.623e-8
2451299659756651402862073343907772789.6421970341463352533170972
22 × 241 × 1787 × 2719 × 30697 × 13703603
2016-10-303069713703603689,906,9660.00630.0113

1 Composite Factors:
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-10-30kkmrkkblmbrbkManual testing500000040000000122789.6420.0560.0030.11230.657%
2021-07-28Oliver KruseOllaptop30000000300000000024-
skipped known factor: 1961033
skipped known factor: 965975665140286207334390777
--1.561--43.979%
2022-04-12Oliver KruseThreadripper-PC3000000010120247026890-
skipped known factor: 1961033
skipped known factor: 965975665140286207334390777
--4,486--63.087%


Trial Factoring results:
No TF results for M245129


ECM factoring results:
Total ECM effort:22.510 GHz-days
Estimated T-Level:28.655
DigitsB1CompleteFacMiss
201100048.4520.000%
25500006.9610.095%
302500000.73148.147%
3510000000.06094.162%
4030000000.00499.597%


ECM Summary

B1B2factorcurvesGHz-days
110001100000300.039
5000050000002741.637
250000250000002407.170
2500003300000070.231
25000036250000280.961
25000038500000421.480
25000023541903070.793
250000367552185508.289
25000055133578581.910


Lucas-Lehmer results:
No L-L results for M245129


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-22Oliver KruseOllaptop
1961033
965975665140286207334390777
6688F29B63FD2D__no
2017-09-22Oliver KruseManual testing
1961033
965975665140286207334390777
6688F29B63FD2D__no
2017-10-12Oliver KruseGTX-06688F29B63FD2D__no
2017-11-06kkmrkkblmbrbkc4.xlarge
1961033
965975665140286207334390777
6688F29B63FD2D__no
2020-04-17Oliver KruseAddPrpType5
1961033
965975665140286207334390777
5366061756EF3D__no


P-1 factor-bounds graph:
B1 = 30000000, B2 = 10120247026890 (P-1 stage 2)
B1 = 30000000, B2 = 3000000000 (P-1 stage 2)
B1 = 30000000 (P-1 stage 1)
B1 = 5000000, B2 = 40000000 (P-1 stage 2)
B1 = 5000000 (P-1 stage 1)
100
101
102
103
104
105
106
107
108
100
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109
1010
1011
1012
1013
1014
TF factor-bounds graph:
this exponent TF target: 44
TF double-checked to: 67.9
ECM T-Level=28.65 ~= 79-bit
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Last modified: 2023-10-02T12:12:48+00:00