is 2 160368251 - 1
has 48275654 decimal digits
takes 1,052.417 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
Actual279763.450364.5570 %5000000500000047.57812.4478 %811.028465.4245 %
Target278381.724664.1026 %1000000180000000102.31593.8995 %484.040565.5024 %
Difference+1+381.7257+0.4544 %+4000000-175000000-54.7378-1.4517 %+326.9879-0.0778 %

Known prime factors (1 factor, 93.5 bits, 0.00005831% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
160368251141277996223417922207043413132993.51344047994332562098656
25 × 3 × 105653 × 1339069 × 3243173
2021-01-081339069324317312,508,38813.72925.932

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2021-01-08Roland ClarksonManual testing5000000500000012993.51349.342.696%


Trial Factoring results:
5758596061626364656667686970717273747576777879
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-06-29carlos56celeron52632640.012
2011-02-02Architects Cubedi4l_12642650.023
2013-02-22Olli Heikkilärapu2652660.047
2015-05-10Richard172.26.176.512662670.093
2016-03-04XZTManual testing2672680.186
2017-03-29La GüiraManual testing2682690.373
2017-03-29La GüiraManual testing2692700.746
2017-12-06Oliver KruseManual testing27027693.94
2021-01-06Roland ClarksonManual testing27627795.43
2021-01-06Roland ClarksonManual testing277278190.9
2021-01-06Roland ClarksonManual testing278279381.7


ECM factoring results:
No ECM results for M160368251


Lucas-Lehmer results:
No L-L results for M160368251


PRP results:
No PRP results for M160368251


CERT results:
No CERT results for M160368251


P-1 factor-bounds graph:
B1 = 5000000 (P-1 stage 1)
105
106
107
105
106
107
TF factor-bounds graph:
279
278
277
276
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