is 2 1970219 - 1
has 593096 decimal digits
takes 0.130 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
Actual26715.081568.6567%----15.081568.6567%0.0000%
PrimeNet2580.019563.7931%80001400000.00142.4717%0.020964.6880%0.8949%
GPU722620.311866.1290%80001000000.00121.1959%0.313166.5341%0.4051%
Difference+5+14.7697+2.5277%-8000-100000-0.0012-1.1959%+14.7685+2.1226%+2.1226%

Known prime factors (2 factors, 70.4 bits, 0.00357122% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
19702193940439721.9101
1
-111.418e-139.534e-81.940e-7
19702193847775448079611548.45197648420
22 × 5 × 4882421
2014-04-04548824211.944e-50.02540.0474

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
197021915161924438855370348792270.361
P-1 results:
No P-1 results for M1970219


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2014-04-04T10:34:00TJAOIManual testing??48.451154.11952e-70.2838.98926e-7


ECM factoring results:

Old Calculation Method

Total ECM effort:3.712 GHz-days
Estimated T-Level:2.050
DigitsB1CurvesCompleteFacMiss
201100041 / 1000.41066.228%
255000041 / 2800.14686.356%

New Calculation Method

Total ECM effort:3.712 GHz-days
Estimated T-Level:2.050
DigitsB1CompleteFacMiss
20110001.64419.316%
25500000.15285.904%
302500000.01099.041%


ECM Summary

B1B2factorcurvesGHz-days
500005000000201.689
500006750000212.023


Lucas-Lehmer results:
No L-L results for M1970219


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-05T10:29:59Oliver KruseGTX-3
3940439
384777544807961
9D0119E92D8B26__no
2017-11-12T03:18:32kkmrkkblmbrbkc4.xlarge
3940439
384777544807961
9D0119E92D8B26__no


P-1 factor-bounds graph:
100
101
100
101
102
103
104
105
106
107
TF factor-bounds graph:
267
2
220
230
240
250
260
270
280
290
2100
Last modified: 2022-04-19T02:53:01+00:00