is 2 35971207 - 1
has 10828413 decimal digits
takes 44.964 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LA7CE0A62AF7287CCdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27113.290663.3803 %50000090000001.74564.4718 %15.036265.0179 %
Target27113.290663.3803 %260000400000004.39564.0197 %17.686264.8523 %
Difference---+240000-31000000-2.6500+0.4522%-2.6500+0.1656 %

Known prime factors (1 factor, 73.8 bits, 0.00020522% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
35971207166776369145044039939132373.820231819256363908
22 × 3 × 31 × 442207 × 1409227
2015-08-01442207140922768.9240.89701.6312

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2007-09-28ANONYMOUSv4_computers625000625000--1.1332.142%
2015-08-01HBendtzHAL900750000090000001222373.8201.7464.472%


Trial Factoring results:
575859606162636465666768697071
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2006-03-01TheJudgerv4_computers212670.415
2012-03-25Carsten KossendeyManual testing2672680.831
2013-04-15Carsten KossendeyManual testing2682691.662
2014-09-19VictordeHollanderManual testing2692703.324
2014-11-05MikeBerlinManual testing2702716.648


ECM factoring results:
No ECM results for M35971207


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2008-03-05ANONYMOUSv4_computersA7CE0A62AF7287CC44.96


PRP results:
No PRP results for M35971207


CERT results:
No CERT results for M35971207


P-1 factor-bounds graph:
B1 = 500000, B2 = 9000000 (P-1 stage 2)
B1 = 625000 (P-1 stage 1)
B1 = 500000 (P-1 stage 1)
104
105
106
104
105
106
107
TF factor-bounds graph:
271
270
269
268
267
this exponent TF target: 71
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00