is 2 69716447 - 1
has 20986742 decimal digits
takes 186.395 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
Actual27327.437563.0137 %670000127300005.14474.4240 %32.582264.6500 %
Target27454.877563.5135 %4500008000000018.54673.9968 %73.424264.9718 %
Difference-1-27.4400-0.4998 %+220000-67270000-13.4020+0.4271%-40.8421-0.3219 %

Known prime factors (1 factor, 78.5 bits, 0.00011264% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
697164474367756201454244466052172478.5313132514915350064
24 × 19 × 971 × 7877 × 1347223
2014-06-1178771347223924.450.31340.5315

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2014-06-11AnthonyRaisTest6700001273000022478.5315.1454.019%


Trial Factoring results:
575859606162636465666768697071727374
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2000-10-28Jossv4_computers212543.44000e-5
2001-01-08Jossv4_computers212560.000
2003-11-28ANONYMOUSv4_computers212620.004
2004-08-06ANONYMOUSv4_computers212650.054
2010-02-08Sturle Sundetandu.ifi2652660.107
2010-06-13S00030vd132662670.214
2010-06-16DRHDRH82672680.429
2010-06-20DRHDRH82682690.858
2013-05-05SMoffatManual testing2692701.715
2013-12-29Carsten KossendeyManual testing2702713.430
2014-04-05NickOfTimeManual testing27127320.58


ECM factoring results:
No ECM results for M69716447


Lucas-Lehmer results:
No L-L results for M69716447


PRP results:
No PRP results for M69716447


CERT results:
No CERT results for M69716447


P-1 factor-bounds graph:
B1 = 670000, B2 = 12730000 (P-1 stage 2)
B1 = 670000 (P-1 stage 1)
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TF factor-bounds graph:
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this exponent TF target: 74
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00