is 2 49698739 - 1
has 14960812 decimal digits
takes 91.045 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 L-L tests remaining
ResidueStatus
L-L8C3800BFAD131607double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27476.981164.8649%15000004500000010.28005.3423%87.261166.7419%1.8770%
PrimeNet2692.402262.3188%22000090000001.85515.1279%4.257364.2511%1.9322%
GPU7227338.488864.3836%320000100000002.25093.6799%40.739765.6942%1.3107%
Difference+1+38.4924+0.4813%+1180000+35000000+8.0290+1.6624%+46.5214+1.0477%+1.0477%

Known prime factors (1 factor, 81.5 bits, 0.00016405% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
4969873934877059667800127853391672581.52935088475451862197
1031 × 179483 × 189619289
2021-07-0117948318961928916,54527.89351.255

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2010-02-12T07:25:00James780000780000---2.072--1.751%
2021-03-15T10:52:51Sid & AndySpeck150000045000000---10.28--5.342%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-07-01T21:57:32Anton RepkoDeskMini7000003430000027P+12581.5297.592


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--
2008-09-23T00:00:00bezaharv4_computers?269--1.203--
2015-07-14T22:33:00Gordon SpenceManual testing269270--2.406--
2015-12-17T16:24:33AirSquirrelsManual testing270271--4.812--
2015-12-17T16:24:33AirSquirrelsManual testing271272--9.62--
2017-10-28T23:50:06Mark RoseManual testing272273--19.25--
2018-12-22T23:55:36-Anonymous-Manual testing273274--38.49--


ECM factoring results:
Exponent "49698739" not found


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2012-01-06T14:33:00betacygniAshleyHome8C3800BFAD13160791.05
2018-09-29T22:20:22MattPdesktop8C3800BFAD13160791.05


PRP results:
Exponent "49698739" 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)
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TF factor-bounds graph:
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Last modified: 2021-07-01T21:57:32+00:00