is 2 56082997 - 1
has 16882665 decimal digits
takes 118.865 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LFB27202661678002double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27468.217964.8649%7750007750002.38171.7777%70.599765.4895%0.6246%
PrimeNet2692.128862.3188%240000100000002.37175.3686%4.500564.3418%2.0229%
GPU7227334.107464.3836%360000120000003.05533.9398%37.162765.7868%1.4032%
Difference+1+34.1105+0.4813%+415000-11225000-0.6736-2.1621%+33.4370-0.2973%-0.7786%

Known prime factors:
No known factors for M56082997

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2011-11-16T21:20:00ANONYMOUS775000775000---2.382--1.778%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-08T00:00:00ANONYMOUSv4_computers21253--2.13955e-5--
2000-01-19T00:00:00ANONYMOUSv4_computers21253--2.13955e-5--
2000-03-01T00:00:00ANONYMOUSv4_computers21254--4.27910e-5--
2000-05-31T00:00:00ANONYMOUSv4_computers21256--0.000--
2001-09-16T00:00:00ANONYMOUSv4_computers21257--0.000--
2002-08-31T00:00:00ANONYMOUSv4_computers21258--0.001--
2004-09-16T00:00:001997rj7v4_computers21260--0.003--
2016-02-23T16:40:25Mark RoseManual testing260263--0.026--
2008-06-16T21:01:00Sturle Sundeiago.ifi263264--0.035--
2008-06-17T20:20:00Sturle Sundehummel.ifi264265--0.067--
2008-06-19T18:49:00Sturle Sundehummel.ifi265266--0.133--
2008-06-20T20:58:00Sturle Sundeothello.ifi266267--0.266--
2009-05-24T16:02:00ScoutWBC-FileServer267268--0.533--
2011-04-12T22:05:00eon_blue_apocalypsecn1-7apr268269--1.066--
2011-06-07T20:18:00shaugeManual testing269270--2.132--
2011-06-07T20:18:00shaugeManual testing270271--4.264--
2012-04-22T06:44:00ScanliaManual testing271272--8.528--
2016-01-08T19:40:46ANONYMOUSManual testing272273--17.06--
2019-02-03T18:24:22TheJudgerManual testing273274--34.11--


ECM factoring results:
No ECM results for M56082997


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2013-02-05T22:12:00ANONYMOUSmikeSandybridgeFB27202661678002118.9
2019-12-29T19:36:56FrogOnRockFrogOnRockFB27202661678002118.9


PRP results:
No PRP results for M56082997


P-1 factor-bounds graph:
B1 = 775000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2019-12-29T19:36:56+00:00