is 2 4362923 - 1
has 1313371 decimal digits
takes 0.544 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L82A21B420568D651double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2676.810665.6716 %11000022550000.04103.0956 %6.851666.7343 %
Target2651.672264.6154 %2400025000000.02871.9869 %1.700965.3184 %
Difference+2+5.1383+1.0563 %+86000-245000+0.0123+1.1087%+5.1506+1.4159 %

Known prime factors (1 factor, 62.8 bits, 0.00143952% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
436292380588414582679120171962.805923559899896
23 × 19 × 6076051973
2012-01-151960760519730.194259.868111.82

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2009-07-26Carsten Kossendeymother25000356250--0.0081.832%
2011-12-31Squeeky_SquirrelT7500_220011000022550006--0.0413.880%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2002-04-14David Campeauv4_computers212610.035
2010-11-21markroldgamer2612620.070


ECM factoring results:
Total ECM effort:0.539 GHz-days
Estimated T-Level:0.577
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
10.183
50000500000030.355


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-12-08ANONYMOUSv4_computers82A21B420568D6510.544


PRP results:
dateuseridcompidcofactorsres64
2017-09-20kkmrkkblmbrbkManual testing
8058841458267912017
1283B9AFB0CCDEA6
2018-02-07Oliver KruseGTX-5
8058841458267912017
1283B9AFB0CCDEA6


CERT results:
No CERT results for M4362923


P-1 factor-bounds graph:
B1 = 110000, B2 = 2255000 (P-1 stage 2)
B1 = 110000 (P-1 stage 1)
B1 = 25000, B2 = 356250 (P-1 stage 2)
B1 = 25000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
262
261
this exponent TF target: 65
TF double-checked to: 67
ECM T-Level=0.58 ~= -15-bit
250
260
270
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Last modified: 2024-03-13T02:15:48+00:00