is 2 4330489 - 1
has 1303608 decimal digits
takes 0.540 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L604B0AE7FB16F52Bdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2676.861665.6716 %2400001241225701.26407.0838 %8.125668.1034 %
Target2651.684764.6154 %2400025000000.02871.9842 %1.713565.3175 %
Difference+2+5.1768+1.0563 %+216000+121622570+1.2353+5.0996%+6.4121+2.7859 %

Known prime factors (2 factors, 131.8 bits, 0.00304464% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
4330489162095843486990042172063.8131871565122172
22 × 3 × 155963760181
2017-05-1641559637601810.72891,536.72,870.2
43304893022163638464000999772168.03434894022805092
22 × 11 × 43 × 109 × 10657 × 15877
2009-08-01106571587727.3060.00200.0039

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2009-08-01Carsten Kossendeymother2168.0340.0050.000%
2023-02-12USAFSS6917th_Scty_Sq240000124122570
skipped known factor: 302216363846400099977
--1.4058.527%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1998-05-16Steffen Zahnv4_computers212600.018
2002-03-31David Campeauv4_computers212610.035
2022-06-21LordJuliusManual testing261263
2017-05-16TJAOIManual testing263264*
63.813
20
0.369


ECM factoring results:
Total ECM effort:0.549 GHz-days
Estimated T-Level:0.577
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.549


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-12-27ANONYMOUSv4_computers604B0AE7FB16F52B0.540
2000-03-22ivanv4_computers604B0AE7FB16F52B0.540


PRP results:
dateuseridcompidcofactorsres64
2017-09-28alpertronManual testing
16209584348699004217
302216363846400099977
46EDCD37CFEC4EC2
2017-12-31kkmrkkblmbrbkold
16209584348699004217
302216363846400099977
46EDCD37CFEC4EC2


CERT results:
No CERT results for M4330489


P-1 factor-bounds graph:
B1 = 240000, B2 = 124122570 (P-1 stage 2)
B1 = 240000 (P-1 stage 1)
100
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103
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106
100
101
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109
1010
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TF factor-bounds graph:
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261
260
this exponent TF target: 65
TF double-checked to: 67
ECM T-Level=0.58 ~= -15-bit
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Last modified: 2024-03-13T02:15:48+00:00