is 2 84462881 - 1
has 25425861 decimal digits
takes 263.565 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
Actual276181.191964.4737 %675000133312506.17423.4234 %187.366165.6899 %
Target27590.594964.0000 %5500009500000025.77233.9411 %116.367265.4188 %
Difference+1+90.5970+0.4737 %+125000-81668750-19.5981-0.5177 %+70.9989+0.2711 %

Known prime factors (1 factor, 84.3 bits, 0.00009976% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
84462881232215197192840748655875132684.264137465827854510876
22 × 3 × 72 × 257 × 69401 × 13107461
2017-11-18694011310746149,7593.52816.0350

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2017-11-18Oliver KruseHalfPM1-2675000133312501222684.2646.1743.774%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-12-24Architects Cubedm1_482642650.044
2012-08-16Carsten KossendeyManual testing2652660.088
2013-02-18ANONYMOUS2662670.177
2013-12-14qwertyuio999PC22672680.354
2014-04-14Preben SManual testing2682690.708
2014-04-20TeamResslerTUB10623322692701.416
2014-09-09webbertManual testing2702712.831
2017-01-29Judge HaleManual testing27127316.99
2017-04-21RichD0Manual testing27327422.65
2017-04-25ktonyManual testing27427545.30
2017-05-16Kevin JagetManual testing27527690.60


ECM factoring results:
No ECM results for M84462881


Lucas-Lehmer results:
No L-L results for M84462881


PRP results:
No PRP results for M84462881


CERT results:
No CERT results for M84462881


P-1 factor-bounds graph:
B1 = 675000, B2 = 13331250 (P-1 stage 2)
B1 = 675000 (P-1 stage 1)
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105
106
103
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105
106
107
108
TF factor-bounds graph:
276
275
274
273
271
270
269
268
267
266
265
this exponent TF target: 75
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00