is 2 160375991 - 1
has 48277984 decimal digits
takes 1,052.467 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
Actual279763.413564.5570 %5000000150000000122.75165.4309 %886.165066.4818 %
Target278381.706264.1026 %1000000180000000102.31593.8995 %484.022165.5024 %
Difference+1+381.7073+0.4544 %+4000000-30000000+20.4356+1.5314%+402.1429+0.9795 %

Known prime factors (1 factor, 82.0 bits, 0.00005113% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
16037599148514204103229780929160792582.00515125145541027329
3 × 89 × 163 × 2647 × 131294567
2021-03-0526471312945676,107.368.092127.13

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2021-03-05Roland ClarksonManual testing500000015000000022582.005127.35.891%


Trial Factoring results:
5758596061626364656667686970717273747576777879
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-07-01garonorth2632640.012
2011-02-02runeskubuntutest12642650.023
2013-02-22sasaki3MATE_J22652660.047
2015-05-09Richardwdmd-solr-web2662670.093
2016-03-04XZTManual testing2672680.186
2017-03-29La GüiraManual testing2682690.373
2017-03-29La GüiraManual testing2692700.746
2017-12-06Oliver KruseManual testing27027693.94
2021-02-20Roland ClarksonManual testing27627795.43
2021-02-20Roland ClarksonManual testing277278190.9
2021-02-20Roland ClarksonManual testing278279381.7


ECM factoring results:
No ECM results for M160375991


Lucas-Lehmer results:
No L-L results for M160375991


PRP results:
No PRP results for M160375991


CERT results:
No CERT results for M160375991


P-1 factor-bounds graph:
B1 = 5000000, B2 = 150000000 (P-1 stage 2)
B1 = 5000000 (P-1 stage 1)
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109
TF factor-bounds graph:
279
278
277
276
270
269
268
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266
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264
this exponent TF target: 78
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00