is 2 55519103 - 1
has 16712916 decimal digits
takes 117.670 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LA55A947A41FF1A64double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27468.910864.8649%52000070200002.68643.3429%71.597266.0394%1.1745%
PrimeNet2692.150462.3188%240000100000002.37175.3618%4.522164.3392%2.0204%
GPU7227334.453864.3836%360000120000003.05533.9348%37.509165.7850%1.4014%
Difference+1+34.4570+0.4813%+160000-4980000-0.3689-0.5919%+34.0881+0.2544%+0.2544%

Known prime factors:
No known factors for M55519103

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2012-04-17T09:19:00David J. Stuckimath-monitor5200007020000---2.686--3.343%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-15T00:00:00ANONYMOUSv4_computers21253--2.16128e-5--
2000-01-19T00:00:00ANONYMOUSv4_computers21253--2.16128e-5--
2000-03-01T00:00:00ANONYMOUSv4_computers21254--4.32256e-5--
2000-05-31T00:00:00ANONYMOUSv4_computers21256--0.000--
2001-09-30T00:00:00ANONYMOUSv4_computers21257--0.000--
2002-07-27T00:00:00ANONYMOUSv4_computers21258--0.001--
2008-07-02T00:22:00ANONYMOUSManual testing21264--0.064--
2009-03-09T19:46:00FreightyardCHESTER264265--0.067--
2009-03-10T14:46:00FreightyardCHESTER265266--0.135--
2009-03-11T16:55:00glennpatLinux-3266267--0.269--
2009-05-16T08:15:00Sturle Sundeheroe.ifi267268--0.538--
2011-04-08T06:30:00Åke TilanderPC51-114-14268269--1.077--
2011-06-01T08:50:00Net_ForceKathy_PC269270--2.154--
2012-04-07T04:06:00Craig MeyersManual testing270272--12.92--
2016-01-22T19:43:13ANONYMOUSManual testing272273--17.23--
2019-05-26T21:29:48TheJudgerManual testing273274--34.46--


ECM factoring results:
No ECM results for M55519103


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2012-06-16T21:33:00David J. Stuckimath-monitorA55A947A41FF1A64117.7
2020-07-28T05:43:38Roland ClarksonManual testingA55A947A41FF1A64117.7


PRP results:
No PRP results for M55519103


P-1 factor-bounds graph:
B1 = 520000, B2 = 7020000 (P-1 stage 2)
B1 = 520000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2020-07-28T05:43:38+00:00