is 2 79505053 - 1
has 23933406 decimal digits
takes 248.094 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-L3C506905A6A3C1__
needs double-check
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27596.244364.0000%665000131337506.08273.7280%102.327065.3421%1.3421%
PrimeNet2716.013261.9718%340000160000005.39895.2429%11.412163.9656%1.9938%
GPU7227596.244364.0000%500000170000006.32993.7799%102.574265.3607%1.3607%
Difference---+165000-3866250-0.2472-0.0518%-0.2472-0.0187%-0.0187%

Known prime factors:
No known factors for M79505053

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-10-09T05:23:19KishAndyHPNotebook665000131337506---6.083--3.728%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2009-05-29T06:41:00Architects Cubedm1_26263264--0.025--
2010-11-28T23:20:00Architects Cubedm1_41264265--0.047--
2011-01-30T05:18:00ANONYMOUS265266--0.094--
2011-02-02T14:41:00searchingforprimesSuperP6T7266267--0.188--
2011-02-04T13:36:00searchingforprimesSuperP6T7267268--0.376--
2011-02-05T14:39:00opyrtZoidberg268269--0.752--
2011-02-08T06:50:00opyrtZoidberg269270--1.504--
2013-01-24T20:07:00Bold_SeekerManual testing270271--3.008--
2014-01-31T02:05:00ANONYMOUSManual testing271272--6.015--
2014-01-31T02:07:00SRS TechnologyManual testing271272--6.015--
2016-08-16T00:04:19AirSquirrelsManual testing272273--12.03--
2016-08-16T01:11:20AirSquirrelsManual testing273274--24.06--
2016-08-16T03:26:19AirSquirrelsManual testing274275--48.12--


ECM factoring results:
No ECM results for M79505053


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2017-08-30T03:01:06ShnobelShnobelWorkD3C506905A6A3C1__248.1


PRP results:
No PRP results for M79505053


P-1 factor-bounds graph:
B1 = 665000, B2 = 13133750 (P-1 stage 2)
B1 = 665000 (P-1 stage 1)
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108
TF factor-bounds graph:
275
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250
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2100
Last modified: 2017-08-30T03:01:06+00:00