is 2 131999729 - 1
has 39735878 decimal digits
takes 700.332 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
Actual2727.245062.5000 %13400003953000026.31566.8432 %33.560665.0662 %
Target277231.880564.9351 %80000015000000068.69003.9320 %300.570566.3138 %
Difference-5-224.6355-2.4351 %+540000-110470000-42.3744+2.9111%-267.0099-1.2476 %

Known prime factors (1 factor, 94.9 bits, 0.00007191% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
131999729374860643932830436655933256892994.920141992959672224189436
22 × 23 × 61 × 21739 × 323951 × 3592777
2018-06-18323951359277730,393,2193.86235.0720

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2018-06-18timbitManual testing134000039530000622994.92026.324.402%


Trial Factoring results:
575859606162636465666768697071727374757677
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-06-03sasaki3mate_ma12632640.015
2010-11-16Torchwood InstituteJupiter-2500k2642650.028
2012-12-05VictordeHollanderManual testing2652680.396
2012-12-05VictordeHollanderManual testing2682690.453
2013-01-29VictordeHollanderManual testing2692700.906
2015-12-16SourceBinary.comManual testing2702711.812
2016-02-21EthanDManual testing2712723.623


ECM factoring results:
No ECM results for M131999729


Lucas-Lehmer results:
No L-L results for M131999729


PRP results:
No PRP results for M131999729


CERT results:
No CERT results for M131999729


P-1 factor-bounds graph:
B1 = 1340000, B2 = 39530000 (P-1 stage 2)
B1 = 1340000 (P-1 stage 1)
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108
TF factor-bounds graph:
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271
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264
this exponent TF target: 77
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00