is 2 56960177 - 1
has 17146722 decimal digits
takes 120.724 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L4DB8326A01D1B93Cdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27467.167464.8649%560000105000003.38533.6893%70.552766.1611%1.2962%
PrimeNet2692.096062.3188%240000110000002.53925.4719%4.635164.3807%2.0619%
GPU7227333.582164.3836%400000130000003.33904.0681%36.921165.8325%1.4489%
Difference+1+33.5852+0.4813%+160000-2500000+0.0463-0.3788%+33.6316+0.3286%+0.3286%

Known prime factors:
No known factors for M56960177

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2012-07-20T15:22:00josiboZiben56000010500000---3.385--3.689%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-23T00:00:00ANONYMOUSv4_computers21253--2.10660e-5--
2000-01-19T00:00:00ANONYMOUSv4_computers21253--2.10660e-5--
2000-03-08T00:00:00ANONYMOUSv4_computers21254--4.21320e-5--
2000-06-28T00:00:00ANONYMOUSv4_computers21256--0.000--
2000-06-29T00:00:00ANONYMOUSv4_computers21256--0.000--
2001-09-30T00:00:00ANONYMOUSv4_computers21257--0.000--
2002-11-16T00:00:00ANONYMOUSv4_computers21258--0.001--
2005-01-20T00:00:00ThomRuleyv4_computers21262--0.011--
2016-02-23T16:40:43Mark RoseManual testing262263--0.017--
2008-08-27T21:34:00Sturle Sundebach.ifi263264--0.034--
2008-08-28T10:47:00Sturle Sundebruckner.ifi264265--0.066--
2008-08-30T00:55:00Sturle Sundeyoughal.ifi265266--0.131--
2008-08-31T21:30:00Sturle Sundeyoughal.ifi266267--0.262--
2009-11-21T12:00:00Marzbug64_bit267268--0.525--
2011-06-23T03:13:00seekuaX3-710268269--1.050--
2011-09-04T06:05:00ANONYMOUSC3E5B5905269270--2.099--
2011-09-13T09:26:00ganghopk01270271--4.198--
2012-04-14T11:15:00Craig MeyersManual testing271272--8.396--
2014-01-30T21:31:00ktonyManual testing272273--16.79--
2014-11-18T16:39:00chalsallManual testing273274--33.59--


ECM factoring results:
No ECM results for M56960177


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2015-02-28T02:25:00mikeblasnucky4DB8326A01D1B93C120.7
2020-08-22T09:55:46dmbeeson4DB8326A01D1B93C120.7
2021-02-22T06:42:35-Anonymous-4DB8326A01D1B93C120.7


PRP results:
No PRP results for M56960177


P-1 factor-bounds graph:
B1 = 560000, B2 = 10500000 (P-1 stage 2)
B1 = 560000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-02-22T06:42:35+00:00