is 2 4804409 - 1
has 1446272 decimal digits
takes 0.633 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L695BFB55AF596A10double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual272199.053368.0556%1037000300730000.50004.3897%199.553369.4578%1.4023%
PrimeNet2610.063962.2951%200004500000.00833.2252%0.072263.5111%1.2161%
GPU722651.518564.6154%320006500000.01252.3225%1.531165.4372%0.8218%
Difference+7+197.5348+3.4402%+1005000+29423000+0.4875+2.0671%+198.0223+4.0206%+4.0206%

Known prime factors:
No known factors for M4804409

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-03-25T00:00:00ANONYMOUSv4_computers25000281250---0.007--0.624%
2011-07-16T00:22:00harleeP4_260055000921250---0.020--1.149%
2014-10-12T23:58:00Jocelyn LaroucheManual testing6835968359---0.013--0.404%
2015-06-17T07:50:00David Campeaui5-2500k103700030073000---0.500--4.390%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-04-27T00:00:00ANONYMOUSv4_computers21261--0.064--
2010-05-15T00:46:00markroldgamer261262--0.064--
2011-09-11T01:59:00GrunwalderGIMPManual testing21263--0.332--
2016-02-23T16:39:01Mark RoseManual testing262263--0.204--
2015-01-03T18:51:00VictordeHollanderManual testing263264--0.409--
2015-01-03T18:51:00VictordeHollanderManual testing264265--0.778--
2015-07-17T22:44:00snme2pm1Manual testing265266--1.555--
2017-11-14T05:04:26YxinityManual testing266267--3.111--
2018-05-08T11:46:19ramgeisManual testing267268--6.222--
2020-12-03T10:03:53-Anonymous-Manual testing268269--12.44--
2020-12-03T10:03:53-Anonymous-Manual testing269270--24.89--
2020-12-03T10:03:53-Anonymous-Manual testing270271--49.77--
2020-12-06T19:22:44-Anonymous-Manual testing271272--99.5--


ECM factoring results:

Old Calculation Method

Total ECM effort:1.784 GHz-days
Estimated T-Level:0.450
DigitsB1CurvesCompleteFacMiss
20110009 / 1000.09091.352%
25500009 / 2800.03296.831%

New Calculation Method

Total ECM effort:1.784 GHz-days
Estimated T-Level:0.450
DigitsB1CompleteFacMiss
20110000.34670.740%
25500000.03296.848%
302500000.00299.798%


ECM Summary

B1B2factorcurvesGHz-days
50000500000091.784


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-07-05T00:00:00ANONYMOUSv4_computers695BFB55AF596A100.633
2000-02-09T00:00:00ANONYMOUSv4_computers0945A607B94F44__0.633
2001-04-01T00:00:00ANONYMOUSv4_computers695BFB55AF596A100.633


PRP results:
No PRP results for M4804409


P-1 factor-bounds graph:
B1 = 1037000, B2 = 30073000 (P-1 stage 2)
B1 = 1037000 (P-1 stage 1)
B1 = 55000, B2 = 921250 (P-1 stage 2)
B1 = 68359 (P-1 stage 1)
B1 = 55000 (P-1 stage 1)
B1 = 25000, B2 = 281250 (P-1 stage 2)
B1 = 25000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2020-12-06T19:22:44+00:00