is 2 83243827 - 1
has 25058889 decimal digits
takes 259.761 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
Actual276183.845464.4737 %6600006600002.98631.3966 %186.831764.9699 %
Target27591.921664.0000 %5500009000000024.53973.8938 %116.461365.4018 %
Difference+1+91.9238+0.4737 %+110000-89340000-21.5534-2.4972 %+70.3704-0.4319 %

Known prime factors (1 factor, 76.0 bits, 0.00009133% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
83243827768715491894899415609912376.025461725223117685
3 × 5 × 223 × 313 × 3259 × 135319
2017-08-213259135319247.710.04730.0623

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2017-08-21bamDesk66000066000012376.0252.9861.569%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-12-06Architects Cubedm1_042642650.045
2012-09-12Carsten KossendeyManual testing2652660.090
2013-02-10GrunwalderGIMPcompute-0-62662670.180
2013-02-25MomerathManual testing2672702.514
2013-11-14g0bManual testing2702712.873
2016-12-23ANONYMOUSManual testing27127586.18
2017-02-19TheJudgerManual testing27527691.92


ECM factoring results:
No ECM results for M83243827


Lucas-Lehmer results:
No L-L results for M83243827


PRP results:
No PRP results for M83243827


CERT results:
No CERT results for M83243827


P-1 factor-bounds graph:
B1 = 660000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
TF factor-bounds graph:
276
275
271
270
267
266
265
this exponent TF target: 75
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00