is 2 80254487 - 1
has 24159008 decimal digits
takes 250.433 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-LFCDAE51DA1FFD0__
needs double-check
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27595.345664.0000%675000124875005.96623.7006%101.311765.3322%1.3322%
PrimeNet2715.957061.9718%340000160000005.39895.2488%11.355963.9679%1.9960%
GPU7227595.345664.0000%500000170000006.32993.7843%101.675565.3623%1.3623%
Difference---+175000-4512500-0.3637-0.0837%-0.3637-0.0301%-0.0301%

Known prime factors:
No known factors for M80254487

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-12-20T18:36:42Smok_bmvbmv_homeC33167500012487500---5.966--3.701%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-12-04T18:20:00Architects Cubeda3_bu2264265--0.047--
2011-01-14T12:52:00runeskubuntu3265266--0.093--
2011-03-21T12:30:00Jim Blaschakhunkajunk266267--0.186--
2011-03-25T21:47:00Gnorfe_d2267268--0.372--
2011-03-28T23:27:00Åke TilanderPC51-115-08268269--0.745--
2012-05-12T01:33:00wangyun183Manual testing269270--1.490--
2013-06-01T12:58:00SMoffatManual testing270271--2.980--
2016-03-13T18:45:09DerekManual testing271272--5.959--
2016-10-04T15:55:11Judge HaleManual testing272273--11.92--
2016-10-09T19:29:00TheJudgerManual testing273274--23.84--
2016-10-09T19:29:00TheJudgerManual testing274275--47.67--


ECM factoring results:
No ECM results for M80254487


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2017-04-30T05:44:34curtisccsc134-20LFCDAE51DA1FFD0__250.4


PRP results:
No PRP results for M80254487


P-1 factor-bounds graph:
B1 = 675000, B2 = 12487500 (P-1 stage 2)
B1 = 675000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2017-04-30T05:44:34+00:00