is 2 20996047 - 1
has 6320440 decimal digits
takes 14.879 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
Actual2682.838963.2353%----2.838963.2353%0.0000%
PrimeNet2650.347561.5385%10000032000000.27635.1082%0.623863.5032%1.9647%
GPU722695.686263.7681%15000045000000.39773.7838%6.083865.1391%1.3709%
Difference-1-2.8473-0.5328%-150000-4500000-0.3977-3.7838%-3.2450-1.9038%-1.9038%

Known prime factors (2 factors, 109.4 bits, 0.00052098% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
209960479828071974142391549.80423404577
7 × 3343511
-733435116.879e-60.18720.3496
209960478622314298102991911859.58120533184885
5 × 17 × 1789 × 135029
2015-11-3017891350290.00480.00930.0141

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
2099604784740725505433227489126615358064933109.385
P-1 results:
No P-1 results for M20996047


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2015-11-30T12:27:20TJAOIManual testing259260*59.581180.00130.690.002
2022-06-24T03:14:34LordJuliusManual testing260265--0.340--
2022-06-24T03:14:34LordJuliusManual testing265266--0.356--
2022-06-24T03:14:34LordJuliusManual testing266267--0.712--
2022-04-11T20:17:40LordJuliusManual testing267268--1.424--


ECM factoring results:
No ECM results for M20996047


Lucas-Lehmer results:
No L-L results for M20996047


PRP results:
No PRP results for M20996047


P-1 factor-bounds graph:
100
101
102
103
104
100
101
102
103
104
105
106
107
TF factor-bounds graph:
268
267
266
265
260
240
250
260
270
280
290
2100
Last modified: 2022-06-24T03:14:34+00:00