is 2 48004919 - 1
has 14450921 decimal digits
takes 83.342 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L7B78CC5E36387397double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27339.846864.3836%520000114400002.80674.0182%42.653665.8147%1.4311%
PrimeNet2681.241661.7647%22000090000001.75805.6411%2.999763.9216%2.1569%
GPU7227219.921663.8889%340000110000002.31804.1653%22.239565.3930%1.5041%
Difference+1+19.9253+0.4947%+180000+440000+0.4888-0.1471%+20.4140+0.4217%+0.4217%

Known prime factors:
No known factors for M48004919

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-12-25T11:43:00deangramArcturus52000011440000---2.807--4.018%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-06-09T00:00:00Thomas Mullenv4_computers21259--0.002--
2003-10-08T00:00:00Thomas Mullenv4_computers21260--0.003--
2008-05-10T00:00:00ahmeraliv4_computers21270--4.978--
2015-12-04T15:23:18AirSquirrelsManual testing270271--4.981--
2015-12-04T15:23:18AirSquirrelsManual testing271272--9.96--
2017-11-21T12:50:09Mark RoseManual testing272273--19.93--


ECM factoring results:
No ECM results for M48004919


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2010-02-11T12:53:00deangramArcturus7B78CC5E3638739783.34
2018-12-22T02:45:54jg5Manual testing7B78CC5E3638739783.34


PRP results:
No PRP results for M48004919


P-1 factor-bounds graph:
B1 = 520000, B2 = 11440000 (P-1 stage 2)
B1 = 520000 (P-1 stage 1)
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108
TF factor-bounds graph:
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2100
Last modified: 2018-12-22T02:45:54+00:00