is 2 3771013 - 1
has 1135189 decimal digits
takes 0.396 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L374A274D590E29D4double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2677.879667.1642 %2000001303648501.11056.8150 %8.990069.4019 %
Target2640.943965.6250 %2400022500000.02212.1603 %0.966066.3676 %
Difference+3+6.9357+1.5392 %+176000+128114850+1.0883+4.6547%+8.0240+3.0343 %

Known prime factors (1 factor, 70.6 bits, 0.00187250% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
377101318048330819218948916172270.612239303481839216
24 × 97 × 154190387783
2009-10-069715419038778363.3651,279.32,389.5

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2009-07-12Carsten Kossendeymother20000265000--0.0051.783%
2022-05-25JossManual testing200000130364850--1.3199.024%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-02-08ANONYMOUSv4_computers212600.020
2009-03-03S485122USB-A2602610.041


ECM factoring results:
Total ECM effort:0.299 GHz-days
DigitsB1CompleteFacMiss


ECM Summary

B1B2factorcurvesGHz-days
10.299


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-02-08ANONYMOUSv4_computers374A274D590E29D40.396
1999-08-31ANONYMOUSv4_computers374A274D590E29D40.396


PRP results:
dateuseridcompidcofactorsres64
2017-09-20kkmrkkblmbrbkManual testing
1804833081921894891617
ADF1CD48F96CD25C
2017-12-07Oliver KruseGTX-2
1804833081921894891617
ADF1CD48F96CD25C


CERT results:
No CERT results for M3771013


P-1 factor-bounds graph:
B1 = 200000, B2 = 130364850 (P-1 stage 2)
B1 = 200000 (P-1 stage 1)
B1 = 20000, B2 = 265000 (P-1 stage 2)
B1 = 20000 (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:
261
260
this exponent TF target: 64
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-02-29T14:28:04+00:00