is 2 7238969 - 1
has 2179147 decimal digits
takes 1.578 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LD5B37766F9B816BDdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2674.104765.6716 %400006100000.02251.9834 %4.127266.3525 %
Target2674.104765.6716 %4500050000000.09962.3125 %4.204366.4655 %
Difference----5000-4390000-0.0771-0.3292 %-0.0771-0.1130 %

Known prime factors (1 factor, 70.3 bits, 0.00097156% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
723896914846399884719773580712270.331102544988690515
5 × 73 × 44701 × 1337621
2012-08-0144701133762164.2910.03640.0430

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2002-03-16ANONYMOUSv4_computers40000570000--0.0221.947%
2002-06-15Team Prime Ribv4_computers40000610000--0.0221.983%
2002-07-27Team Prime Ribv4_computers40000610000--0.0221.983%
2012-08-01Squeeky_SquirrelP4_26002270.3310.0550.000%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-09-13monsterv4_computers212610.021
1998-10-25ANONYMOUSv4_computers212620.042
2004-03-26Sturle Sundev4_computers212630.136


ECM factoring results:
No ECM results for M7238969


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-05-23Wayne Beardsleyv4_computersD5B37766F9B816BD1.579
2002-06-15Team Prime Ribv4_computersD5B37766F9B816BD1.579
2002-07-27Team Prime Ribv4_computersD5B37766F9B816BD1.579


PRP results:
dateuseridcompidcofactorsres64
2018-02-22Oliver KruseGTX-5
1484639988471977358071
4047C1BE22E8A3F2
2019-04-16marssystemssystem03
1484639988471977358071
4047C1BE22E8A3F2


CERT results:
No CERT results for M7238969


P-1 factor-bounds graph:
B1 = 40000, B2 = 610000 (P-1 stage 2)
B1 = 40000, B2 = 570000 (P-1 stage 2)
B1 = 40000 (P-1 stage 1)
103
104
105
103
104
105
106
107
TF factor-bounds graph:
263
262
261
this exponent TF target: 67
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00