is 2 34855081 - 1
has 10492425 decimal digits
takes 43.569 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LAA47C8C6AB2A3E2Ddouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27113.716263.3803 %50000090000001.74564.4546 %15.461865.0115 %
Target27113.716263.3803 %260000400000004.39564.0032 %18.111764.8463 %
Difference---+240000-31000000-2.6500+0.4513%-2.6500+0.1653 %

Known prime factors (1 factor, 96.5 bits, 0.00027691% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
348550811135021536734024132089563096973096.5191628200974104785658208
25 × 3 × 17 × 23 × 29363 × 238081 × 6204901
2015-04-202380816204901530,964,9691.02071.1444

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2005-10-18ANONYMOUSv4_computers590000590000--1.0692.083%
2015-04-20HBendtzMINIHAL900850000090000001223096.5191.7464.455%


Trial Factoring results:
575859606162636465666768697071
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2005-10-04JC_Herlesv4_computers212670.429
2012-02-12Craig MeyersManual testing2672692.573
2014-04-20The MawnManual testing26927110.29


ECM factoring results:
No ECM results for M34855081


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2006-06-13ANONYMOUSv4_computersAA47C8C6AB2A3E2D43.57


PRP results:
No PRP results for M34855081


CERT results:
No CERT results for M34855081


P-1 factor-bounds graph:
B1 = 500000, B2 = 9000000 (P-1 stage 2)
B1 = 590000 (P-1 stage 1)
B1 = 500000 (P-1 stage 1)
104
105
106
104
105
106
107
TF factor-bounds graph:
271
269
267
this exponent TF target: 71
TF double-checked to: 67
250
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Last modified: 2024-03-13T02:15:48+00:00