is 2 1649797 - 1
has 496639 decimal digits
takes 0.078 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
Actual26718.010768.6567%500000150000000.08805.0056%18.098770.2256%1.5689%
PrimeNet2570.011663.1579%70001200000.00092.5634%0.012564.1023%0.9444%
GPU722610.186265.5738%6500800000.00071.1721%0.186965.9773%0.4035%
Difference+6+17.8245+3.0829%+493500+14920000+0.0873+3.8335%+17.9118+4.2484%+4.2484%

Known prime factors (4 factors, 168.8 bits, 0.01023338% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
16497979898783723.2393
3
-136.778e-137.568e-81.389e-7
164979734414765431031.6801043
7 × 149
2008-07-1571492.126e-101.006e-61.006e-6
16497975263743320391238.937159527
67 × 2381
2008-07-156723813.395e-81.318e-51.653e-5
1649797370911566312106499387032374.97311241127433014683
3 × 479 × 7822635652759
2019-01-2447978226356527593,465.029,08454,321

11 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1649797340664294987471691754.919
164979752104652896240085371962.176
164979718115049165495118611772270.618
1649797179316940723567266697172475912993.856
16497973671573107113652510321842984493098.212
164979712764834549905035345583076234372933106.654
16497971952383279630743132138784791900541735113.911
1649797126356327240412615493256880116514478180740129.893
164979719326218417893046393782156538723619870751142137.150
16497976719081259794612190913977281850850649543343144145.591
164979766510727350073490647012032779971408945238602441447
3
51168.830
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-17T19:17:53alpertronManual testing5000001500000012-
skipped known factor: 9898783
skipped known factor: 3441476543
skipped known factor: 526374332039
--0.088--5.006%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-07-15T07:44:00J FeitsmaManual testing??31.680103.91476e-110.1698.53905e-11
2008-07-15T07:44:00J FeitsmaManual testing??38.937121.17561e-80.1692.56430e-8


ECM factoring results:

Old Calculation Method

Total ECM effort:14.873 GHz-days
Estimated T-Level:24.482
DigitsB1CurvesCompleteFacMiss
2011000251 / 1002.5108.025%
2550000251 / 2800.89640.737%

New Calculation Method

Total ECM effort:14.873 GHz-days
Estimated T-Level:24.482
DigitsB1CompleteFacMiss
20110008.0970.030%
25500000.73248.105%
302500000.04595.594%
3510000000.00299.794%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025014.81
50000500000010.059


Lucas-Lehmer results:
No L-L results for M1649797


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-02T18:23:32Oliver KruseGTX-2
9898783
3441476543
526374332039
ED7B899AF7EE25__no
2017-11-02T07:07:33kkmrkkblmbrbkc4.xlarge
9898783
3441476543
526374332039
ED7B899AF7EE25__no
2019-01-24T12:47:48ATHec2-PRPCF1
9898783
3441476543
526374332039
37091156631210649938703
0A5F545CD115138Eno
2019-01-25T10:10:24kkmrkkblmbrbkc5.large
9898783
3441476543
526374332039
37091156631210649938703
0A5F545CD115138Eno


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
1013
TF factor-bounds graph:
267
2
220
230
240
250
260
270
280
290
2100
Last modified: 2019-12-23T11:26:01+00:00