is 2 3952813 - 1
has 1189916 decimal digits
takes 0.493 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2677.517267.1642 %10000001130976001.28548.2897 %8.802569.8862 %
Target2640.900565.6250 %2600025000000.02912.2833 %0.929566.4099 %
Difference+3+6.6167+1.5392 %+974000+110597600+1.2563+6.0064%+7.8730+3.4763 %

Known prime factors (3 factors, 148.6 bits, 0.00375909% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
395281386961887826.37411
11
-1112.267e-122.794e-73.681e-7
395281311305045191030.074143
11 × 13
2008-09-0711133.731e-112.009e-64.049e-6
395281354630591194998489002033663372892.142691034349398750826336
25 × 32 × 7 × 53 × 109 × 2647 × 20231 × 1107989
2022-05-11202311107989318,324,3600.01440.0204

4 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2022-04-18JossManual testing300000300000
skipped known factor: 86961887
skipped known factor: 1130504519
--0.0482.574%
2022-05-11JossManual testing50000011309760022892.1421.2679.943%
2022-09-26JossManual testing1000000113097600
skipped known factor: 86961887
skipped known factor: 1130504519
skipped known factor: 5463059119499848900203366337
--1.35710.605%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2008-09-07Will EdgingtonManual testing??
30.074
10


ECM factoring results:
Total ECM effort:0.475 GHz-days
Estimated T-Level:0.577
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.475


Lucas-Lehmer results:
No L-L results for M3952813


PRP results:
dateuseridcompidcofactorsres64
2017-09-20kkmrkkblmbrbkManual testing
1130504519
86961887
6D948439EA48118A
2018-01-01Oliver KruseGTX-3
86961887
1130504519
6D948439EA48118A
2022-05-12aperson12012_VP113
86961887
1130504519
5463059119499848900203366337
2AA9DDD1A2EEAF7D


CERT results:
dateuseridcompid
2022-05-12Yoonerica


P-1 factor-bounds graph:
B1 = 1000000, B2 = 113097600 (P-1 stage 2)
B1 = 500000, B2 = 113097600 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 500000 (P-1 stage 1)
B1 = 300000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
this exponent TF target: 64
TF double-checked to: 67
ECM T-Level=0.58 ~= -15-bit
250
260
270
280
290
2100
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Last modified: 2024-03-13T02:15:48+00:00