is 2 18149 - 1
has 5464 decimal digits
takes 0.000 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LD406E4A8EEC9E6D4double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2671,637.220677.6119%100000000000801070519743994501,861,661.462340.4983%1,863,298.682986.6787%
Target2440.000165.9091%500500000.00001.5147%0.000166.4255%
Difference+23+1,637.2205+11.7028%+99999999500+80107051974349450+1,861,661.4623+38.9836%+1,863,298.6828+20.2533%

Known prime factors:
No known factors for M18149

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-04-29ANONYMOUSv4_computers10000010000000---0.000--1.799%
2001-07-29Alex Kruppav4_computers1000000100000000---0.003--4.483%
2001-08-18Alex Kruppav4_computers1000000100000000---0.003--4.483%
2002-04-28ANONYMOUSv4_computers163841638400---4.46828e-5--0.585%
2002-06-09ANONYMOUSv4_computers327683276800---8.93655e-5--0.954%
2002-07-14ANONYMOUSv4_computers655366553600---0.000--1.442%
2003-02-02ANONYMOUSv4_computers13107213107200---0.000--2.052%
2003-03-27ANONYMOUSv4_computers26214426214400---0.001--2.780%
2003-04-03ANONYMOUSv4_computers52428852428800---0.001--3.615%
2003-04-27ANONYMOUSv4_computers1048576104857600---0.003--4.550%
2003-05-19ANONYMOUSv4_computers2097152209715200---0.006--5.576%
2003-07-06ANONYMOUSv4_computers4194304419430400---0.011--6.688%
2003-09-29ANONYMOUSv4_computers8388608838860800---0.023--7.880%
2003-09-29ANONYMOUSv4_computers167772161677721600---0.046--9.139%
2013-10-19David Campeaui5-2500k234445000234445000---0.100--7.206%
2013-10-22David Campeaui5-2500k468885000468885000---0.200--8.252%
2013-10-29David Campeaui5-2500k703330000703330000---0.300--8.884%
2013-11-11David Campeaui5-2500k937775000937775000---0.400--9.341%
2013-11-16David Campeaui5-2500k11722200001172220000---0.500--9.699%
2015-02-16JayderHPJared117222000035360118869---1.294--15.533%
2016-12-23James Hintz11_04_2016185270557111486774540212---3.417--17.610%
2019-05-13alexManual testing1000000000050000000000012---15.65--20.569%
2022-04-26-Anonymous-T581010000000000080107051974399450---1,861,661--40.498%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-05-09ATH5960X100000000024100000000027--6.651
2023-07-08masserManual testing4200000001680000000010241--0.702
2023-08-26masserManual testing4200000007518000000065--2.148


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-10-15ANONYMOUSv4_computers252253--0.033--
2000-03-08ANONYMOUSv4_computers253254--0.066--
2000-09-23ANONYMOUSv4_computers21256--0.529--
2002-10-19ANONYMOUSv4_computers21257--1.058--
2016-02-23LaurVManual testing257258--1.058--
2016-02-23LaurVManual testing258259--2.116--
2010-03-17GrunwalderGIMPManual testing21260--8.463--
2016-02-23LaurVManual testing259260--4.231--
2012-12-25bcp19Manual testing260261--8.463--
2015-08-29snme2pm1G4261262--16.93--
2016-04-25Sid & AndyWoody262263--54.09--
2018-05-20snme2pm1g10263264--108.2--
2021-02-14Ruslan BorisovManual testing264265--205.9--
2022-03-27Ruslan BorisovManual testing265266--411.7--


ECM factoring results:
Total ECM effort:79,171.909 GHz-days
Estimated T-Level:49.391
DigitsB1CompleteFacMiss
20110003,134.4170.000%
25500001,284.5640.000%
30250000390.2420.000%
351000000100.5200.000%
40300000022.8320.000%
45110000004.6690.938%
50440000000.87841.551%
551100000000.15385.840%
602600000000.02597.560%
658000000000.00499.641%


ECM Summary

B1B2factorcurvesGHz-days
10000001000000004893.001
30000003000000001001.841
110000001100000030.137
1100000011000000008,115547.9
44000000440000000010027.01
11000000015643644716701,45045,948
11000000017878453292701605,784
2600000002600000000011.596
260000000402265390527033026,859


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1997-01-01George WoltmanD406E4A8EEC9E6D45.33883e-6
2015-04-11MadPooManual testingD406E4A8EEC9E6D45.33883e-6


PRP results:
No PRP results for M18149


P-1 factor-bounds graph:
B1 = 100000000000, B2 = 80107051974399450 (P-1 stage 2)
B1 = 100000000000 (P-1 stage 1)
B1 = 10000000000, B2 = 500000000000 (P-1 stage 2)
B1 = 10000000000 (P-1 stage 1)
B1 = 1852705571, B2 = 114867745402 (P-1 stage 2)
B1 = 1172220000, B2 = 35360118869 (P-1 stage 2)
B1 = 1852705571 (P-1 stage 1)
B1 = 1172220000 (P-1 stage 1)
B1 = 937775000 (P-1 stage 1)
B1 = 703330000 (P-1 stage 1)
B1 = 468885000 (P-1 stage 1)
B1 = 234445000 (P-1 stage 1)
B1 = 16777216, B2 = 1677721600 (P-1 stage 2)
B1 = 8388608, B2 = 838860800 (P-1 stage 2)
B1 = 4194304, B2 = 419430400 (P-1 stage 2)
B1 = 16777216 (P-1 stage 1)
B1 = 2097152, B2 = 209715200 (P-1 stage 2)
B1 = 8388608 (P-1 stage 1)
B1 = 1048576, B2 = 104857600 (P-1 stage 2)
B1 = 1000000, B2 = 100000000 (P-1 stage 2)
B1 = 4194304 (P-1 stage 1)
B1 = 524288, B2 = 52428800 (P-1 stage 2)
B1 = 2097152 (P-1 stage 1)
B1 = 262144, B2 = 26214400 (P-1 stage 2)
B1 = 1048576 (P-1 stage 1)
B1 = 1000000 (P-1 stage 1)
B1 = 131072, B2 = 13107200 (P-1 stage 2)
B1 = 100000, B2 = 10000000 (P-1 stage 2)
B1 = 524288 (P-1 stage 1)
B1 = 65536, B2 = 6553600 (P-1 stage 2)
B1 = 262144 (P-1 stage 1)
B1 = 32768, B2 = 3276800 (P-1 stage 2)
B1 = 131072 (P-1 stage 1)
B1 = 16384, B2 = 1638400 (P-1 stage 2)
B1 = 100000 (P-1 stage 1)
B1 = 65536 (P-1 stage 1)
B1 = 32768 (P-1 stage 1)
B1 = 16384 (P-1 stage 1)
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TF factor-bounds graph:
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this exponent TF target: 44
TF double-checked to: 67.9
ECM T-Level=49.39 ~= 147-bit
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Last modified: 2023-11-25T14:45:58+00:00