is 2 6924553 - 1
has 2084499 decimal digits
takes 1.510 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LD041A892F4557B32double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2674.291165.6716 %13000028275000.08763.5760 %4.378766.8992 %
Target2674.291165.6716 %4500045000000.09102.2365 %4.382166.4394 %
Difference---+85000-1672500-0.0034+1.3395%-0.0034+0.4598 %

Known prime factors (1 factor, 78.3 bits, 0.00113027% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
69245533634674372342107984614072478.26626244830333034551
7 × 11941 × 313982202173
2012-09-14119413139822021738,840.55,408.810,102

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2001-12-22ANONYMOUSv4_computers30000202500--0.0121.325%
2011-11-23James Heinrichi7-92013000028275006--0.0883.576%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-07-05ANONYMOUSv4_computers212620.044
2004-03-16Sturle Sundev4_computers212630.142


ECM factoring results:
Total ECM effort:0.995 GHz-days
DigitsB1CompleteFacMiss


ECM Summary

B1B2factorcurvesGHz-days
10.995


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-07-26ANONYMOUSv4_computersD041A892F4557B321.510
2002-01-15ANONYMOUSv4_computersD041A892F4557B321.510


PRP results:
dateuseridcompidcofactorsres64
2018-01-23Oliver KruseGTX-4
363467437234210798461407
C35827B0F946718C
2019-01-26krackerO0
363467437234210798461407
C35827B0F946718C


CERT results:
No CERT results for M6924553


P-1 factor-bounds graph:
B1 = 130000, B2 = 2827500 (P-1 stage 2)
B1 = 130000 (P-1 stage 1)
B1 = 30000, B2 = 202500 (P-1 stage 2)
B1 = 30000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
109
1010
1011
1012
TF factor-bounds graph:
263
262
this exponent TF target: 67
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-02-09T03:30:02+00:00