is 2 19305623 - 1
has 5811572 decimal digits
takes 12.307 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2683.087463.2353%----3.087463.2353%0.0000%
PrimeNet2650.377961.5385%9000028000000.21974.8431%0.597663.4012%1.8627%
GPU722696.184063.7681%14000040000000.32383.6097%6.507965.0760%1.3079%
Difference-1-3.0966-0.5328%-140000-4000000-0.3238-3.6097%-3.4204-1.8407%-1.8407%

Known prime factors (2 factors, 103.3 bits, 0.00053505% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1930562330992474939291341.49580268
22 × 3 × 6689
-466892.085e-80.00030.0006
1930562340156075651490765271961.800104000983681
7 × 14857283383
2016-06-017148572833830.0227748.251,397.5

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
193056231244536168289060902559338890458332103.295
P-1 results:
No P-1 results for M19305623


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2016-06-01T15:26:41TJAOIManual testing261262*61.800190.00725.420.014
2022-06-24T02:43:34LordJuliusManual testing262265--0.346--
2022-06-24T02:43:34LordJuliusManual testing265266--0.387--
2022-06-24T02:43:34LordJuliusManual testing266267--0.774--
2022-04-11T17:14:06LordJuliusManual testing267268--1.548--


ECM factoring results:
No ECM results for M19305623


Lucas-Lehmer results:
No L-L results for M19305623


PRP results:
No PRP results for M19305623


P-1 factor-bounds graph:
100
101
100
101
102
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
268
267
266
265
262
240
250
260
270
280
290
2100
Last modified: 2022-06-24T02:43:34+00:00