is 2 4934311 - 1
has 1485376 decimal digits
takes 0.684 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LA6540DC25EC1BFAAdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual272193.813068.0556%1200000397500000.66334.7130%194.476369.5611%1.5055%
PrimeNet2610.062362.2951%220004500000.00913.3060%0.071463.5416%1.2465%
GPU722651.478664.6154%340007000000.01412.4106%1.492765.4684%0.8530%
Difference+7+192.3344+3.4402%+1166000+39050000+0.6492+2.3024%+192.9836+4.0927%+0.6526%

Known prime factors:
No known factors for M4934311

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-09-13T05:28:00Carsten Kossendeydurandal30000435000---0.010--0.768%
2011-07-17T00:40:00Squeeky_SquirrelT7500_220060000960000---0.022--1.196%
2014-11-23T14:05:00mikrMSI120000039750000---0.663--4.713%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-01-05T00:00:00ANONYMOUSv4_computers21261--0.062--
2010-03-24T22:40:00markroldgamer261262--0.062--
2011-09-28T18:56:00GrunwalderGIMPManual testing21263--0.323--
2016-02-23T16:39:04Mark RoseManual testing262263--0.199--
2014-12-31T12:20:00VictordeHollanderManual testing263264--0.398--
2014-12-31T12:20:00VictordeHollanderManual testing264265--0.757--
2015-07-26T05:51:00snme2pm1Manual testing265266--1.514--
2017-10-26T16:09:20YxinityManual testing266267--3.029--
2018-05-23T15:00:57ramgeisManual testing267268--6.058--
2021-02-01T12:43:43TJAOIManual testing268269--12.12--
2021-04-23T15:20:57-Anonymous-Manual testing269270--24.23--
2021-04-24T10:38:13-Anonymous-Manual testing270271--48.46--
2021-04-25T10:47:01-Anonymous-Manual testing271272--96.92--


ECM factoring results:
Total ECM effort:1.891 GHz-days
Estimated T-Level:1.731
DigitsB1CompleteFacMiss
20110000.34670.740%
25500000.03296.848%
302500000.00299.798%


ECM Summary

B1B2factorcurvesGHz-days
50000500000091.891


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-05-08T00:00:00Steffen Zahnv4_computersA6540DC25EC1BFAA0.684
2000-03-08T00:00:00ANONYMOUSv4_computersA6540DC25EC1BFAA0.684


PRP results:
No PRP results for M4934311


P-1 factor-bounds graph:
B1 = 1200000, B2 = 39750000 (P-1 stage 2)
B1 = 1200000 (P-1 stage 1)
B1 = 60000, B2 = 960000 (P-1 stage 2)
B1 = 60000 (P-1 stage 1)
B1 = 30000, B2 = 435000 (P-1 stage 2)
B1 = 30000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-04-25T10:47:01+00:00