is 2 49688017 - 1
has 14957584 decimal digits
takes 91.026 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 L-L tests remaining
ResidueStatus
L-L47466E789FA9A220double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual276308.001765.7895%15000004500000010.28004.4703%318.281767.3188%1.5293%
PrimeNet2692.402762.3188%22000090000001.85515.1277%4.257864.2510%1.9322%
GPU7227338.497164.3836%320000100000002.25093.6798%40.748065.6942%1.3106%
Difference+3+269.5046+1.4059%+1180000+35000000+8.0290+0.7904%+277.5336+1.6246%+1.6246%

Known prime factors (1 factor, 99.8 bits, 0.00020085% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
4968801711016902232496452448106598848873199.79811086075574817618952379
11 × 2789 × 20297 × 180731 × 98508143
2021-08-26180731985081433.842e+914.71026.627

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2010-02-12T10:45:00James780000780000---2.072--1.392%
2021-03-14T02:22:35Sid & AndyMagic_8_Ball150000045000000---10.28--4.470%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-08-26T21:25:07Anton RepkoDeskMini7000003430000027P+13199.7987.592


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-12-31T00:00:00Team Prime Ribv4_computers?259--0.001--
2007-08-14T00:00:001997rj7v4_computers?263--0.020--
2008-08-26T00:00:00Taxythingyv4_computers263264--0.040--
2008-08-26T00:00:00Taxythingyv4_computers264265--0.075--
2008-08-26T00:00:00Taxythingyv4_computers265266--0.150--
2008-08-26T00:00:00Taxythingyv4_computers266267--0.301--
2008-08-26T00:00:00Taxythingyv4_computers267268--0.602--
2008-08-26T00:00:00Taxythingyv4_computers268269--1.203--
2015-07-14T17:12:00For ResearchManual testing269270--2.406--
2015-09-27T18:57:25GregManual testing270271--4.813--
2015-11-07T04:45:10Sid & AndyManual testing271272--9.63--
2017-12-21T17:15:10monstManual testing272273--19.25--
2018-12-23T19:52:34-Anonymous-Manual testing273274--38.50--
2021-05-06T09:45:39Anton RepkoManual testing274276--231.0--


ECM factoring results:
Exponent "49688017" not found


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2010-09-25T10:48:00WazBOSS47466E789FA9A22091.03
2017-03-04T17:49:45ANONYMOUS47466E789FA9A22091.03


PRP results:
Exponent "49688017" not found


P-1 factor-bounds graph:
B1 = 1500000, B2 = 45000000 (P-1 stage 2)
B1 = 700000, B2 = 34300000 (P+1 stage 2)
B1 = 1500000 (P-1 stage 1)
B1 = 780000 (P-1 stage 1)
B1 = 700000 (P+1 stage 1)
104
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108
TF factor-bounds graph:
276
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259
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2100
Last modified: 2021-08-26T21:25:07+00:00