is 2 160148167 - 1
has 48209403 decimal digits
takes 1,050.972 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
Actual2801,529.000165.0000 %5000000150000000122.75165.0027 %1,651.751666.7510 %
Target278382.249264.1026 %1000000180000000102.31593.8988 %484.565165.5021 %
Difference+2+1,146.7509+0.8974 %+4000000-30000000+20.4356+1.1039%+1,167.1865+1.2488 %

Known prime factors (1 factor, 86.1 bits, 0.00005375% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
160148167816856544715386557242960232686.078255031499897025533
11 × 17 × 23 × 1334947 × 44418139
2020-10-1213349474441813997,85635.03943.010

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2020-10-12Roland ClarksonManual testing500000015000000022686.078127.35.890%


Trial Factoring results:
575859606162636465666768697071727374757677787980
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-06-29Richardsvn_022632640.012
2011-02-01Ungelovendegammali7_12642650.023
2013-02-21OS1Tina2652660.047
2015-05-10Richard172.26.176.512662670.093
2020-10-12Roland ClarksonManual testing212680.372
2016-02-28XZTManual testing2672680.187
2017-03-25Xolotlarmstrong-phi-112682690.373
2020-10-12Roland ClarksonManual testing2682690.373
2018-01-27ZenghuiManual testing2692700.747
2018-02-03Russ42Manual testing2702711.493
2018-02-12CassessoryManual testing2712722.986
2020-10-12Roland ClarksonManual testing2712722.986
2018-02-12CassessoryManual testing2722735.973
2020-10-12Roland ClarksonManual testing2722735.973
2018-02-12CassessoryManual testing27327411.95
2020-10-12Roland ClarksonManual testing27327411.95
2018-02-12CassessoryManual testing27427523.89
2020-10-12Roland ClarksonManual testing27427523.89
2018-02-19CassessoryManual testing27527647.78
2020-10-12Roland ClarksonManual testing27527647.78
2020-10-12Roland ClarksonManual testing27627795.56
2020-10-12Roland ClarksonManual testing277278191.1
2020-10-12Roland ClarksonManual testing278279382.3
2020-10-12Roland ClarksonManual testing279280764.5


ECM factoring results:
No ECM results for M160148167


Lucas-Lehmer results:
No L-L results for M160148167


PRP results:
No PRP results for M160148167


CERT results:
No CERT results for M160148167


P-1 factor-bounds graph:
B1 = 5000000, B2 = 150000000 (P-1 stage 2)
B1 = 5000000 (P-1 stage 1)
105
106
107
105
106
107
108
109
TF factor-bounds graph:
280
279
278
277
276
275
274
273
272
271
270
269
268
267
266
265
264
this exponent TF target: 78
TF double-checked to: 67
250
260
270
280
290
JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00