is 2 3050681 - 1
has 918347 decimal digits
takes 0.260 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L012BCC9A113D3607double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27078.327068.5714%30000001000000001.02246.8186%79.349470.7144%2.1430%
PrimeNet2600.050363.3333%120002200000.00292.5229%0.053264.2584%0.9251%
GPU722641.166765.6250%140002200000.00311.4650%1.169866.1286%0.5036%
Difference+6+77.1602+2.9464%+2986000+99780000+1.0193+5.3536%+78.1796+4.5858%+4.5858%

Known prime factors:
No known factors for M3050681

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2004-02-07T00:00:00ANONYMOUSv4_computers2048204800---0.002--0.161%
2010-10-04T15:29:00markrtiny1100002447500---0.029--2.102%
2016-03-16T00:26:13Squeeky_SquirrelP4_2600205000568875012---0.062--2.874%
2017-09-26T15:28:12mikrMSI300000010000000012---1.022--6.819%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-06-03T00:00:00ANONYMOUSv4_computers21260--0.050--
2009-02-12T21:49:00Sturle Sundegouffy.ifi260261--0.050--
2011-03-18T14:14:00Sid & AndyBuzz261262--0.101--
2013-01-07T13:54:00dbaughManual testing262263--0.322--
2015-02-07T18:28:00VictordeHollanderManual testing263264--0.644--
2015-02-07T18:28:00VictordeHollanderManual testing264265--1.225--
2015-06-06T19:31:00ThaManual testing265266--2.450--
2017-05-07T02:13:05Gordon SpenceManual testing266267--4.899--
2018-07-25T22:30:18ramgeisManual testing267268--9.80--
2021-03-25T10:40:17TJAOIManual testing268269--19.60--
2022-05-04T15:05:42mikrManual testing269270--39.19--


ECM factoring results:

Old Calculation Method

Total ECM effort:11.835 GHz-days
Estimated T-Level:4.950
DigitsB1CurvesCompleteFacMiss
201100099 / 1000.99036.973%
255000099 / 2800.35470.173%

New Calculation Method

Total ECM effort:11.835 GHz-days
Estimated T-Level:4.950
DigitsB1CompleteFacMiss
20110003.8512.127%
25500000.35769.960%
302500000.02397.769%
3510000000.00199.894%


ECM Summary

B1B2factorcurvesGHz-days
500005000000829.55
50000635000070.912
500007019185101.372


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-05-30T00:00:00ANONYMOUSv4_computers012BCC9A113D36070.260


PRP results:
No PRP results for M3050681


P-1 factor-bounds graph:
B1 = 3000000, B2 = 100000000 (P-1 stage 2)
B1 = 3000000 (P-1 stage 1)
B1 = 205000, B2 = 5688750 (P-1 stage 2)
B1 = 110000, B2 = 2447500 (P-1 stage 2)
B1 = 205000 (P-1 stage 1)
B1 = 110000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-05-04T15:05:42+00:00