is 2 1485017 - 1
has 447035 decimal digits
takes 0.066 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
Actual26720.009168.6567%500000150000000.08354.9424%20.092770.2058%1.5491%
PrimeNet2570.012963.1579%65001000000.00082.3357%0.013764.0184%0.8605%
GPU722610.206965.5738%6000500000.00050.9458%0.207465.8994%0.3256%
Difference+6+19.8023+3.0829%+494000+14950000+0.0830+3.9966%+19.8853+4.3064%+4.3064%

Known prime factors (3 factors, 119.5 bits, 0.00804735% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
14850178910103723.0873
3
-137.530e-137.182e-81.318e-7
148501711880137823.5024
22
2008-07-15447.532e-132.591e-75.272e-7
148501789075966632628066259372272.9162999156461933704
23 × 3 × 173 × 722340188327
2017-11-241737223401883271,040.52,548.94,760.6

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
14850171058532443241111546.589
1485017793676037521279231061811415112996.003
14850171058234687003050097206393133693096.418
148501794289800593699376802689750796706700736119.505
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-17T19:14:57alpertronManual testing5000001500000012-
skipped known factor: 8910103
skipped known factor: 11880137
--0.084--4.942%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-07-15T10:01:00J FeitsmaManual testing??23.50286.51539e-160.1481.45018e-15


ECM factoring results:

Old Calculation Method

Total ECM effort:30.003 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:30.003 GHz-days
Estimated T-Level:25.391
DigitsB1CompleteFacMiss
201100014.6540.000%
25500001.65119.189%
302500000.14186.866%
3510000000.01099.021%


ECM Summary

B1B2factorcurvesGHz-days
50000500000024913.85
50000500000020.111
250000350000005016.04


Lucas-Lehmer results:
No L-L results for M1485017


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-01T06:59:02Oliver KruseGTX-3
8910103
11880137
CA9BF8EAB2A37B__no
2017-11-05T02:15:18kkmrkkblmbrbkc4.xlarge
8910103
11880137
CA9BF8EAB2A37B__no
2017-11-25T18:49:08kkmrkkblmbrbkc4.xlarge
8910103
11880137
8907596663262806625937
56307950CF477F__no
2017-11-25T19:00:18ATHec2-1xf
8910103
11880137
8907596663262806625937
56307950CF477F__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
1011
1012
TF factor-bounds graph:
267
2
220
230
240
250
260
270
280
290
2100
Last modified: 2022-02-24T18:49:53+00:00