is 2 390437 - 1
has 117534 decimal digits
takes 0.004 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
Actual26776.104371.6418%10000000001018331744430793.191824.1762%869.296078.4977%
Target2440.000056.8182%70002000000.000212.8057%0.000362.3479%
Difference+23+76.1043+14.8236%+999993000+1018331544430+793.1915+11.3705%+869.2958+16.1498%

Known prime factors (9 factors, 495.1 bits, 0.12679541% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
390437995614351929.8911275
3 × 52 × 17
-25252.337e-103.514e-77.152e-7
390437206931610011134.26826500
22 × 53 × 53
2008-07-211251251.018e-81.757e-63.576e-6
390437504038549531135.55364548
22 × 32 × 11 × 163
2008-07-21111632.311e-82.710e-73.147e-7
3904373050148505191238.150390607
7 × 41 × 1361
2008-07-214113611.451e-71.587e-61.946e-6
39043756833790112731342.3707278228
22 × 33 × 67391
2008-07-2127673912.062e-65.197e-59.640e-5
390437355914981882080331754.98245579053968
24 × 7 × 227 × 1792757
2014-10-2422717927570.00670.00140.0026
3904371286054042765975705343672476.767164694181489712259
3 × 7 × 11 × 39461 × 109441 × 165089
2015-02-1910944116508956,8360.00160.0031
39043716310845484020282241223140412890.3982088793516498216388460
22 × 32 × 5 × 192 × 32145175692493327
2021-09-1336132145175692493327725,616,76924,618,74045,980,950
39043779136530430475018711200159932892.67610134353356684307418508
22 × 109 × 64907939 × 358106112677
2021-09-15649079393581061126772.651e+9275.12512.24

502 Composite Factors:
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2015-02-19pdazzlManual testing500000150000002476.7670.0070.0080.0144.195%
2021-03-02Seth_TrManual testing100000001310000000-
skipped known factor: 995614351
skipped known factor: 20693161001
skipped known factor: 50403854953
skipped known factor: 305014850519
skipped known factor: 5683379011273
skipped known factor: 35591498188208033
skipped known factor: 128605404276597570534367
--1.136--11.103%
2021-03-10Seth_TrManual testing200000002860000000-
skipped known factor: 995614351
skipped known factor: 20693161001
skipped known factor: 50403854953
skipped known factor: 305014850519
skipped known factor: 5683379011273
skipped known factor: 35591498188208033
skipped known factor: 128605404276597570534367
--2.456--12.660%
2021-05-20Seth_TrManual testing1000000000241000000000-
skipped known factor: 995614351
skipped known factor: 20693161001
skipped known factor: 50403854953
skipped known factor: 305014850519
skipped known factor: 5683379011273
skipped known factor: 35591498188208033
skipped known factor: 128605404276597570534367
--197.9--21.809%
2021-12-17Seth_TrManual testing10000000001000000000-
skipped known factor: 995614351
skipped known factor: 20693161001
skipped known factor: 50403854953
skipped known factor: 305014850519
skipped known factor: 5683379011273
skipped known factor: 35591498188208033
skipped known factor: 128605404276597570534367
--14.06--11.796%
2021-12-20Seth_TrManual testing10000000001018331744430-
skipped known factor: 995614351
skipped known factor: 20693161001
skipped known factor: 50403854953
skipped known factor: 305014850519
skipped known factor: 5683379011273
skipped known factor: 35591498188208033
skipped known factor: 128605404276597570534367
skipped known factor: 7913653043047501871120015993
--793.2--24.176%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-10-01nordisweet162000000002000000000027--19.13
2021-10-09nordisweet162000000002000000000065--19.13


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-07-21J FeitsmaManual testing??34.268114.31389e-90.0088.91523e-9
2008-07-21J FeitsmaManual testing??38.150125.12998e-80.0081.06015e-7
2008-07-21J FeitsmaManual testing??35.553111.13887e-80.0082.35362e-8
2008-07-21J FeitsmaManual testing??42.370135.61273e-70.0081.15950e-6
2022-09-29LordJuliusManual testing2125934.268111.01757e-80.0082.10294e-8
2022-09-29LordJuliusManual testing2125938.150121.45089e-70.0082.99839e-7
2022-09-29LordJuliusManual testing2125954.982170.0070.0080.014
2022-09-29LordJuliusManual testing2125935.553112.31123e-80.0084.77646e-8
2022-09-29LordJuliusManual testing2125942.370132.06190e-60.0084.25956e-6
2022-09-29LordJuliusManual testing2125929.89192.33735e-100.0084.83045e-10
2022-09-29LordJuliusManual testing259260--0.197--
2022-09-29LordJuliusManual testing260261--0.393--
2022-09-29LordJuliusManual testing261262--0.787--
2022-09-29LordJuliusManual testing262263--2.514--
2022-09-29LordJuliusManual testing263264--5.028--
2022-09-29LordJuliusManual testing264265--9.57--
2022-09-29LordJuliusManual testing265266--19.14--
2022-09-29LordJuliusManual testing266267--38.28--


ECM factoring results:
Total ECM effort:890.993 GHz-days
Estimated T-Level:36.399
DigitsB1CompleteFacMiss
2011000274.4320.000%
255000070.6580.000%
3025000013.5810.000%
3510000002.12511.948%
4030000000.28075.601%
45110000000.03196.926%
50440000000.00399.696%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002762.904
50000500000050.053
250000250000001447.575
25000038500000674.169
10000001680000005313.72
3000000504000000500388.3
3000000519000000300236.2
3000000528000000300238.1


Lucas-Lehmer results:
No L-L results for M390437


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-23Oliver KruseOllaptopF0162EE9D0D3BD__?
2017-09-23Oliver KruseManual testingF0162EE9D0D3BD__?
2017-10-13Oliver KruseThreadripperF0162EE9D0D3BD__no
2017-12-15ATHxps
995614351
20693161001
50403854953
305014850519
5683379011273
35591498188208033
128605404276597570534367
F0162EE9D0D3BD__no
2020-04-18Oliver KruseAddPrpType5
995614351
20693161001
50403854953
305014850519
5683379011273
35591498188208033
128605404276597570534367
DBF78729FDE445__no
2021-09-13SRJ2877LTOS
995614351
20693161001
50403854953
305014850519
5683379011273
35591498188208033
128605404276597570534367
1631084548402028224122314041
DBF78729FDE445E5no
2021-09-16mnd9vv
995614351
20693161001
50403854953
305014850519
5683379011273
35591498188208033
128605404276597570534367
1631084548402028224122314041
7913653043047501871120015993
DBF78729FDE445E5no


P-1 factor-bounds graph:
B1 = 1000000000, B2 = 1018331744430 (P-1 stage 2)
B1 = 1000000000, B2 = 241000000000 (P-1 stage 2)
B1 = 1000000000 (P-1 stage 1)
B1 = 20000000, B2 = 2860000000 (P-1 stage 2)
B1 = 10000000, B2 = 1310000000 (P-1 stage 2)
B1 = 20000000 (P-1 stage 1)
B1 = 10000000 (P-1 stage 1)
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
100
101
102
103
104
105
106
107
108
109
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
1014
1015
1016
1017
TF factor-bounds graph:
267
266
265
264
263
262
261
260
259
2
this exponent TF target: 44
TF double-checked to: 67.7
ECM T-Level=36.4 ~= 104-bit
250
260
270
280
290
2100
2110
Last modified: 2023-03-25T13:08:14+00:00