is 2 49676687 - 1
has 14954173 decimal digits
takes 91.005 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 L-L tests remaining
ResidueStatus
L-LBB00398E4B76B947double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27477.015364.8649%15000004500000010.28005.3421%87.295366.7418%1.8769%
PrimeNet2692.403362.3188%22000090000001.85515.1276%4.258364.2510%1.9321%
GPU7227338.505964.3836%320000100000002.25093.6797%40.756865.6941%1.3106%
Difference+1+38.5094+0.4813%+1180000+35000000+8.0290+1.6623%+46.5384+1.0477%+1.0477%

Known prime factors (1 factor, 85.4 bits, 0.00017194% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
49676687515532623418397679201988472685.414518887887409236529
518887887409236529
2021-09-051518887887409236529282,3187.510e+101.403e+11

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2010-10-19T20:46:00ANONYMOUS720000720000---1.913--1.693%
2021-03-07T15:24:58Sid & AndyMagic_8_Ball150000045000000---10.28--5.342%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-09-05T17:51:04Anton RepkoDeskMini7000003430000027P+12685.4147.592


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--
2008-08-26T00:00:00ahmeraliv4_computers?270--2.407--
2011-08-05T11:44:00David CampeauManual testing270271--4.814--
2015-11-25T04:45:06dragonbud20Manual testing271272--9.63--
2018-02-15T17:00:12monstManual testing272273--19.25--
2018-12-24T01:55:36-Anonymous-Manual testing273274--38.51--


ECM factoring results:
Exponent "49676687" not found


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2011-09-22T14:24:00WRwr18BB00398E4B76B94791.00
2019-08-23T05:04:44PiGuyGamingRig1BB00398E4B76B94791.00


PRP results:
Exponent "49676687" 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 = 720000 (P-1 stage 1)
B1 = 700000 (P+1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-09-05T18:12:19+00:00