is 2 89950957 - 1
has 27077937 decimal digits
takes 303.251 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
Actual276170.137164.4737 %7300007300003.56851.4778 %173.705664.9987 %
Target27585.067664.0000 %60000010000000029.40654.0568 %114.474065.4605 %
Difference+1+85.0695+0.4737 %+130000-99270000-25.8380-2.5790 %+59.2316-0.4618 %

Known prime factors (1 factor, 95.3 bits, 0.00010590% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
89950957474390656999484004287336945372995.260263694057751650159924
22 × 3 × 31 × 83 × 103 × 151 × 457 × 2467 × 487057
2019-01-23246748705797,774,5130.14110.2423

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2019-01-23HardyP Germanyws-Xeon1630_3.7GHz73000073000012995.2603.5691.658%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-11-12Architects Cubedm1_812642650.042
2013-03-27Johan ViljoenL12652660.083
2013-03-28ramgeisManual testing2662670.166
2013-04-02ramgeisManual testing26727320.94
2017-08-20monstManual testing27327421.27
2018-11-10Jon PaceManual testing274276127.6


ECM factoring results:
No ECM results for M89950957


Lucas-Lehmer results:
No L-L results for M89950957


PRP results:
No PRP results for M89950957


CERT results:
No CERT results for M89950957


P-1 factor-bounds graph:
B1 = 730000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
TF factor-bounds graph:
276
274
273
267
266
265
this exponent TF target: 75
TF double-checked to: 67
250
260
270
280
290
2100
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Last modified: 2024-03-13T02:15:48+00:00