is 2 90058187 - 1
has 27110216 decimal digits
takes 303.613 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
Actual276169.934564.4737 %730000146000007.26253.5504 %177.197165.7350 %
Target27584.966364.0000 %60000010000000029.40654.0574 %114.372765.4607 %
Difference+1+84.9682+0.4737 %+130000-85400000-22.1439-0.5070 %+62.8243+0.2744 %

Known prime factors (1 factor, 88.9 bits, 0.00009872% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
900581875783906612487095841053471512788.9023211205335772024725
52 × 59 × 2389 × 202099 × 4509161
2018-12-2620209945091611,215,0912.13502.2430

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2018-02-25c10ck3rManual testing1000010000--0.0530.091%
2018-12-26CuboxPhoenix730000146000001222788.9027.2633.910%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2009-04-07Carsten Kossendeymother2662691.162
2009-06-11Carsten Kossendeymother2692701.328
2009-12-20Carsten Kossendeymother2702712.655
2015-01-01Carsten KossendeyManual testing2712725.311
2016-07-06Carsten KossendeyManual testing27227310.62
2017-10-23Carsten KossendeyManual testing27327421.24
2018-11-19TheJudgerManual testing274276127.5


ECM factoring results:
No ECM results for M90058187


Lucas-Lehmer results:
No L-L results for M90058187


PRP results:
No PRP results for M90058187


CERT results:
No CERT results for M90058187


P-1 factor-bounds graph:
B1 = 730000, B2 = 14600000 (P-1 stage 2)
B1 = 730000 (P-1 stage 1)
B1 = 10000 (P-1 stage 1)
103
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105
106
103
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105
106
107
108
TF factor-bounds graph:
276
274
273
272
271
270
269
this exponent TF target: 75
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00