is 2 4870027 - 1
has 1466025 decimal digits
takes 0.675 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
Actual2676.101465.6716%----6.101465.6716%0.0000%
PrimeNet2610.063162.2951%220004500000.00913.2988%0.072263.5389%1.2438%
GPU722651.498164.6154%320007000000.01372.3715%1.511865.4545%0.8392%
Difference+2+4.6033+1.0563%-32000-700000-0.0137-2.3715%+4.5896+0.2171%+0.2171%

Known prime factors (2 factors, 105.5 bits, 0.00216716% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
4870027150483834311133.8091545
3 × 5 × 103
-51033.136e-102.078e-62.078e-6
487002739227589461865096360472271.732402745092192149
7 × 211 × 12973 × 21018869
2019-07-121297321018869123.020.23260.4299

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
48700275903118072960009224281151513725732105.541
P-1 results:
No P-1 results for M4870027


Trial Factoring results:
No TF results for M4870027


ECM factoring results:

Old Calculation Method

Total ECM effort:0.628 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

New Calculation Method

Total ECM effort:0.628 GHz-days
Estimated T-Level:0.150
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.628


Lucas-Lehmer results:
No L-L results for M4870027


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-20T06:41:50kkmrkkblmbrbkManual testing
15048383431
DE5B46B1192A16__no
2018-04-01T19:50:39Oliver KruseGTX-3
15048383431
DE5B46B1192A16__no
2019-07-12T23:26:06Niels_Mache_NextcloudSuperDry-X
15048383431
3922758946186509636047
A925542934E16383no
2019-07-13T20:49:59kkmrkkblmbrbkc5.large
15048383431
3922758946186509636047
A925542934E16383no


P-1 factor-bounds graph:
100
101
102
103
104
105
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
267
230
240
250
260
270
280
290
2100
Last modified: 2019-07-13T20:49:59+00:00