is 2 1569289 - 1
has 472404 decimal digits
takes 0.070 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
Actual26718.934668.6567%500000150000000.08354.9755%19.018270.2162%1.5595%
PrimeNet2570.012263.1579%70001100000.00082.4773%0.013164.0706%0.9127%
GPU722610.195765.5738%6500600000.00061.0518%0.196465.9359%0.3621%
Difference+6+18.7389+3.0829%+493500+14940000+0.0829+3.9237%+18.8218+4.2803%+4.2803%

Known prime factors (3 factors, 194.5 bits, 0.01239453% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
156928964874407271032.5952067
3 × 13 × 53
-13535.277e-109.831e-71.714e-6
15692891268505047721353306796712476.74740416553220004515
5 × 19 × 51461 × 8267181017
2017-12-0451461826718101716,28529.17554.485
1569289433265511805553580162814792685.16313804516306606163051
307 × 74923 × 732943 × 818837
2022-05-267329438188377,728,6140.04780.0966

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
156928982293513089925859900691023636081733109.342
156928928107843268918476007289039596039523336117.758
1569289549599488728920308727354712962430189883711911340949161.911
156928935654941067183750735752545038478644347459360475679
678408343
59194.506
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-17T19:16:27alpertronManual testing5000001500000012-
skipped known factor: 6487440727
--0.084--4.975%


Trial Factoring results:
No TF results for M1569289


ECM factoring results:

Old Calculation Method

Total ECM effort:31.292 GHz-days
Estimated T-Level:25.391
DigitsB1CurvesCompleteFacMiss
2011000301 / 1003.0104.855%
2550000301 / 2801.07534.064%
3025000050 / 6400.07892.479%

New Calculation Method

Total ECM effort:31.292 GHz-days
Estimated T-Level:25.391
DigitsB1CompleteFacMiss
201100012.2630.000%
25500001.39024.916%
302500000.11689.004%
3510000000.00899.198%


ECM Summary

B1B2factorcurvesGHz-days
50000500000024813.88
50000500000030.168
250000400000004916.90
2500004000000010.345


Lucas-Lehmer results:
No L-L results for M1569289


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-01T22:05:54Oliver KruseGTX-0
6487440727
D00CA4F549B854__no
2017-10-31T08:01:31kkmrkkblmbrbkold
6487440727
D00CA4F549B854__no
2017-12-05T10:19:25YarBerManual testing
6487440727
126850504772135330679671
5212A96F2C4416__no
2017-12-05T13:41:10Oliver KruseThreadripper
6487440727
126850504772135330679671
5212A96F2C4416__no


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
267
230
240
250
260
270
280
290
2100
Last modified: 2022-05-26T10:14:39+00:00