is 2 48610291 - 1
has 14633156 decimal digits
takes 84.393 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-L47C6FEEBF87D22__
needs double-check
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27478.704964.8649%47000095175002.42403.4644%81.128966.0821%1.2172%
PrimeNet2681.226261.7647%22000090000001.75805.6499%2.984263.9250%2.1603%
GPU7227219.673563.8889%340000110000002.31804.1719%21.991465.3954%1.5065%
Difference+2+59.0314+0.9760%+130000-1482500+0.1061-0.7075%+59.1375+0.6867%+0.6867%

Known prime factors (1 factor, 77.7 bits, 0.00015988% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
486102912487335337781411436774412477.7192558445224881920
28 × 3 × 5 × 11 × 60569252483
2019-05-29256605692524831,079.48,307.215,516

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2011-12-21T17:59:00monstpoincare4700009517500---2.424--3.464%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-06-06T00:00:00Thomas Mullenv4_computers21259--0.002--
2007-11-17T00:00:001997rj7v4_computers21263--0.033--
2016-02-23T16:39:50Mark RoseManual testing263264--0.040--
2008-06-02T00:00:00S00030v4_computers264265--0.077--
2008-06-02T00:00:00S00030v4_computers265266--0.154--
2008-06-02T00:00:00S00030v4_computers266267--0.307--
2008-06-02T00:00:00S00030v4_computers267268--0.615--
2008-06-02T00:00:00S00030v4_computers268269--1.230--
2011-12-03T04:06:00Aaron HavilandManual testing269270--2.460--
2011-12-03T04:06:00Aaron HavilandManual testing270271--4.919--
2011-12-03T14:34:00Aaron HavilandManual testing271272--9.84--
2018-02-23T21:52:39-Anonymous-Manual testing272273--19.68--
2022-07-07T04:55:08LordJuliusManual testing273274--39.35--
Missing TF 74 - 75
Missing TF 75 - 76
Missing TF 76 - 77
2019-05-29T04:33:31Roland ClarksonManual testing27727877.71924449.8172.2917.7


ECM factoring results:
No ECM results for M48610291


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2012-02-18T20:33:00SaintLelandBafongu47C6FEEBF87D22__84.39


PRP results:
No PRP results for M48610291


P-1 factor-bounds graph:
B1 = 470000, B2 = 9517500 (P-1 stage 2)
B1 = 470000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-07-07T04:55:08+00:00