is 2 18603829 - 1
has 5600311 decimal digits
takes 11.317 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
Actual2683.203963.2353 %----3.203963.2353 %
Target2696.417363.7681 %130000180000000.97353.4696 %7.390865.0252 %
Difference-1-3.2134-0.5328 %-130000-18000000-0.9735-3.4696 %-4.1869-1.7899 %

Known prime factors (2 factors, 149.4 bits, 0.00080317% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
186038299680420516190063440412169.71426017279873380
22 × 32 × 5 × 271 × 503 × 1060357
2003-06-0150310603576.66770.05140.0952
186038299863298472058227778689992479.70626508786100050231
36 × 4019 × 5119 × 1767499
2003-06-01511917674998,961.40.08920.1587

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-06-01Sturle Sundev4_computers45149.420-0.000%
2008-07-15George WoltmanManual testing45149.4200.8030.000%


Trial Factoring results:
57585960616263646566676869
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-11-03Net_Forcev4_computers212580.002
2001-11-24Net_Forcev4_computers212590.002
2002-03-31Team Prime Ribv4_computers212660.402
2022-04-11LordJuliusManual testing266268


ECM factoring results:
No ECM results for M18603829


Lucas-Lehmer results:
No L-L results for M18603829


PRP results:
dateuseridcompidcofactorsres64
2023-03-29DobriSabaiSabai
968042051619006344041
986329847205822777868999
A5F0A1164DE842EC


CERT results:
dateuseridcompid
2023-03-29George WoltmanSkylake4


P-1 factor-bounds graph:
101
102
103
104
101
102
103
104
105
106
107
TF factor-bounds graph:
268
266
259
258
this exponent TF target: 69
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00