is 2 55088689 - 1
has 16583348 decimal digits
takes 116.757 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L0C5FC0CEA4C3CDA0double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27469.449264.8649%570000108300003.46963.7056%72.918866.1668%1.3020%
PrimeNet2692.167262.3188%240000100000002.37175.3566%4.538964.3373%2.0184%
GPU7227334.723064.3836%360000120000003.05533.9309%37.778365.7836%1.4000%
Difference+1+34.7262+0.4813%+210000-1170000+0.4143-0.2253%+35.1405+0.3832%+0.3832%

Known prime factors:
No known factors for M55088689

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2012-03-05T11:09:00Abdullah Baigcocc257000010830000---3.470--3.706%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-01T00:00:00ANONYMOUSv4_computers21253--2.17817e-5--
2000-01-12T00:00:00ANONYMOUSv4_computers21253--2.17817e-5--
2000-03-01T00:00:00ANONYMOUSv4_computers21254--4.35633e-5--
2000-05-24T00:00:00ANONYMOUSv4_computers21256--0.000--
2001-09-10T00:00:00ANONYMOUSv4_computers21257--0.000--
2002-06-29T00:00:00ANONYMOUSv4_computers21258--0.001--
2008-08-04T02:17:00ANONYMOUSManual testing21264--0.065--
2009-01-01T06:31:00ArneRike264265--0.068--
2009-01-01T20:46:00Team_Deutschlandwm_ek_021265266--0.136--
2009-01-03T02:42:00raymondfrtf021266267--0.271--
2009-11-17T15:41:00Gnorfe_kjellar267268--0.543--
2011-04-07T03:51:00PrimeCruncherApollo7268269--1.085--
2011-05-30T06:29:00ANONYMOUSdownstairs269270--2.170--
2011-09-11T01:21:00TheJudgerManual testing270271--4.341--
2012-06-10T19:45:00XyzzyManual testing271272--8.682--
2016-01-23T11:53:24ANONYMOUSManual testing272273--17.36--
2019-03-29T14:34:07dh1Manual testing273274--34.73--


ECM factoring results:
No ECM results for M55088689


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2012-07-14T20:46:00Clown_Royalfireplace0C5FC0CEA4C3CDA0116.8
2020-12-14T18:53:53David Barinapcbarina20C5FC0CEA4C3CDA0116.8


PRP results:
No PRP results for M55088689


P-1 factor-bounds graph:
B1 = 570000, B2 = 10830000 (P-1 stage 2)
B1 = 570000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2020-12-14T18:53:53+00:00