is 2 30421933 - 1
has 9157915 decimal digits
takes 31.690 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LE66528EB36BB03E9double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27115.714964.7887 %36000076500001.14374.0745 %16.858666.2234 %
Target27115.714964.7887 %200000300000002.75443.5666 %18.469366.0446 %
Difference---+160000-22350000-1.6107+0.5079%-1.6107+0.1788 %

Known prime factors (1 factor, 69.6 bits, 0.00022894% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
304219339258931881625085948712169.64915217527238695
32 × 5 × 338167271971
2012-02-2893381672719716.489227,82851,976

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2005-11-01ANONYMOUSv4_computers3600007650000--1.1444.074%
2012-02-28Craig MeyersManual testing2169.6491.3730.000%


Trial Factoring results:
575859606162636465666768697071
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-09-16Net_Forcev4_computers212560.000
2003-06-30AxelFoxv4_computers212600.003
2004-12-13markrv4_computers212620.010
2005-07-17TheJudgerv4_computers212670.491
2011-05-17UngelovendeManual testing2672680.983
2022-02-05masserManual testing268269
2022-02-26masserManual testing269270
69.649
21
2022-03-07masserManual testing270271


ECM factoring results:
No ECM results for M30421933


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2005-11-27ANONYMOUSv4_computersE66528EB36BB03E931.69


PRP results:
No PRP results for M30421933


CERT results:
No CERT results for M30421933


P-1 factor-bounds graph:
B1 = 360000, B2 = 7650000 (P-1 stage 2)
B1 = 360000 (P-1 stage 1)
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1010
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TF factor-bounds graph:
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268
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this exponent TF target: 71
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00