is 2 5387 - 1
has 1622 decimal digits
takes 0.000 GHz-days to do one PRP test
Last-known PrimeNet details:
-unknown- L-L tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2675,515.856280.5970%----5,515.856280.5970%13.0970%
PrimeNet2400.000067.5000%500100000.00002.5951%0.000070.0951%2.5951%
GPU722440.000470.4545%500100000.00001.0429%0.000471.4975%1.0429%
Difference+23+5,515.8558+10.1425%-500-100000.0000-1.0429%+5,515.8558+9.0996%+9.0996%

Known prime factors (4 factors, 210.3 bits, 3.90439213% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5387350289136311135.0283251245
5 × 79 × 8231
-7982311.472e-64.806e-87.699e-8
5387208905140642411444.2481938974760
23 × 35 × 5 × 199483
1999-04-232431994830.00071.020e-61.865e-6
5387233189815469528473212064.3382164375491642180
22 × 32 × 5 × 12024308286901
-9120243082869011,003.060.188112.41
53871211809634796047137992166.71611247536985298377
3 × 59 × 1009163 × 62968427
-1009163629684274,541.20.00040.0006

11 Composite Factors:
exponentprime factorscomposite factordigitsbits*
53877317720128634887745690712479.276
53878168385905710940600368387325513099.366
5387424483750344843874968564489416931101.744
538748714551197039480785701085874836133108.586
5387253153262188895726297728910516155934110.964
5387282581665122286922486123274293634888247940131.054
53871706417806454023635339407356892547823180879144143.614
53878867683756620726403748161397922152651231072944145.991
53879898528741272753660967203971250659033484026017124950166.082
538759032762495337754153341072547880650077285892765333
439
53175.302
538720678535388485222304108959603646164036533810125715
92785647207009
64210.330
P-1 results:
Exponent "5387" not found


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-04-23T00:00:00ANONYMOUSv4_computers??44.248140.0007.76142e-70.001


ECM factoring results:
Total ECM effort:15.426 GHz-days
Estimated T-Level:33.506
DigitsB1CurvesCompleteFacMiss
20110001108 / 10011.0800.001%
25500001108 / 2803.9571.898%
302500001108 / 6401.73117.682%
3510000001108 / 15800.70149.585%
4030000001108 / 47000.23678.996%
4511000000218 / 97000.02297.778%
5044000000200 / 171000.01298.837%

ECM Summary

B1B2factorcurvesGHz-days
30000003000000008903.530
110000001100000000180.262
44000000440000000020011.63


Lucas-Lehmer results:
Exponent "5387" not found


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-21T18:40:54Oliver KruseOliver-PC8C3F63501DD960__?
2017-09-21T19:21:18Oliver KruseManual testing8C3F63501DD960__?
2017-10-02T09:57:09kkmrkkblmbrbkManual testing
35028913631
20890514064241
23318981546952847321
121180963479604713799
8C3F63501DD960__no
2017-12-07T02:54:20ATHManual testing
35028913631
20890514064241
23318981546952847321
121180963479604713799
8C3F63501DD960__no
2020-04-17T12:33:03Oliver KruseIOS-1
35028913631
20890514064241
23318981546952847321
121180963479604713799
9040B2A5D760F6__no


P-1 factor-bounds graph:
100
101
102
103
104
105
106
107
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
1014
TF factor-bounds graph:
267
2
230
240
250
260
270
280
290
2100
Last modified: 2020-04-17T12:33:03+00:00