is 2 160275631 - 1
has 48247773 decimal digits
takes 1,051.809 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
Actual2801,527.784165.0000 %5000000500000047.57812.2204 %1,575.362265.7771 %
Target278381.945264.1026 %1000000180000000102.31593.8992 %484.261165.5023 %
Difference+2+1,145.8389+0.8974 %+4000000-175000000-54.7378-1.6788 %+1,091.1011+0.2749 %

Known prime factors (1 factor, 90.7 bits, 0.00005660% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
16027563120270921121482650753204705992890.7116323768933245582029
3 × 37 × 36107 × 1155841 × 1365097
2020-10-27115584113650971,564,45211.10722.384

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2020-10-27Roland ClarksonManual testing5000000500000012890.71149.342.696%


Trial Factoring results:
575859606162636465666768697071727374757677787980
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-06-29Aliali-pone2632640.012
2011-02-02sasaki3HOME22642650.023
2013-02-22Charles A. Morrischandra2652660.047
2015-05-02gurus72662670.093
2020-10-27Roland ClarksonManual testing212680.372
2016-03-02XZTManual testing2672680.186
2017-03-22arniework12682690.373
2020-10-27Roland ClarksonManual testing2682690.373
2017-12-02arnaudstm-15-1612692700.746
2020-10-27Roland ClarksonManual testing2692700.746
2017-12-02jiboManual testing2702711.492
2017-12-02jiboManual testing2712722.984
2017-12-03Earle LoweManual testing2722735.968
2020-10-27Roland ClarksonManual testing2722735.968
2020-10-27Roland ClarksonManual testing27327411.94
2020-10-27Roland ClarksonManual testing27427523.87
2020-10-27Roland ClarksonManual testing27527647.74
2020-10-27Roland ClarksonManual testing27627795.49
2020-10-27Roland ClarksonManual testing277278191.0
2020-10-27Roland ClarksonManual testing278279381.9
2020-10-27Roland ClarksonManual testing279280763.9


ECM factoring results:
No ECM results for M160275631


Lucas-Lehmer results:
No L-L results for M160275631


PRP results:
No PRP results for M160275631


CERT results:
No CERT results for M160275631


P-1 factor-bounds graph:
B1 = 5000000 (P-1 stage 1)
105
106
107
105
106
107
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
2100
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Last modified: 2024-03-13T02:15:48+00:00