is 2 13863433 - 1
has 4173310 decimal digits
takes 6.151 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L9B288A3C0286C118double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual273137.977767.1233%1600000162097845057.78988.5038%195.767569.9191%2.7958%
Target2698.611665.2174%9000022000000.13192.7935%8.743566.1891%0.9717%
Difference+4+129.3660+1.9059%+1510000+1618778450+57.6579+5.7103%+187.0240+3.7300%+1.8241%

Known prime factors (1 factor, 126.6 bits, 0.00091306% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1386343312734930029806501265700898475065783862339126.5824592992958456430404251565422167
3 × 13 × 23 × 281 × 4507 × 33503 × 140363 × 291727 × 2947111
2023-01-1229172729471111.043e+100.28080.3820

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-12-01T00:00:00ANONYMOUSv4_computers1550002208750---0.172--1.940%
2002-05-05T00:00:00ANONYMOUSv4_computers200000200000---0.129--0.836%
2022-12-16T13:15:48nordisweet16_30.8b1416000001600000---1.029--2.176%
2023-01-12T19:18:17nordisweet16_30.8b141600000162097845039126.58257.7912.30115.68.504%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-07-25T00:00:00lalerav4_computers21256--0.001--
2000-07-25T00:00:00ANONYMOUSv4_computers21265--0.526--
2014-07-08T13:09:00NesowaManual testing265266--0.539--
2015-09-04T23:15:00NesowaManual testing266267--1.078--
2017-12-23T05:02:07-Anonymous-Manual testing267268--2.156--
2018-01-14T22:54:00ramgeisManual testing268269--4.312--
2021-08-08T08:25:35SRBaseManual testing269270--8.624--
2021-08-23T14:22:02ChuckGPU72_TF270271--17.25--
2021-09-06T01:52:02LaurVGPU72_TF271272--34.50--
2021-10-29T11:56:22RichD0Manual testing272273--69.00--


ECM factoring results:
Total ECM effort:1.349 GHz-days
Estimated T-Level:0.385
DigitsB1CompleteFacMiss
20110000.07792.596%
25500000.00799.291%


ECM Summary

B1B2factorcurvesGHz-days
50000500000021.349


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2003-06-06T00:00:00ANONYMOUSv4_computers9B288A3C0286C1186.151
2005-09-22T00:00:00ANONYMOUSv4_computers9B288A3C0286C1186.151


PRP results:
dateuseridcompidcofactorsres64PRP
2023-01-18T08:58:45jeriffeeLiving_Room
127349300298065012657008984750657838623
FDC7D5D40ADAF7BBno


P-1 factor-bounds graph:
B1 = 1600000, B2 = 1620978450 (P-1 stage 2)
B1 = 1600000 (P-1 stage 1)
B1 = 155000, B2 = 2208750 (P-1 stage 2)
B1 = 200000 (P-1 stage 1)
B1 = 155000 (P-1 stage 1)
104
105
106
107
104
105
106
107
108
109
1010
TF factor-bounds graph:
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270
269
268
267
266
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256
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270
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2120
2130
Last modified: 2023-01-18T08:58:45+00:00