is 2 6736817 - 1
has 2027984 decimal digits
takes 1.469 GHz-days to do one PRP test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-L72E9EF42E39613D2double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27170.965067.6056%1000000230000000.69524.7455%71.660272.3511%8.8590%
PrimeNet2630.236963.4921%280007000000.02043.1462%0.257366.6383%3.1462%
GPU722674.410765.6716%400009000000.02752.1659%4.438167.8375%2.1659%
Difference+4+66.5543+1.9340%+960000+22100000+0.6677+2.5796%+67.2220+4.5136%+4.5136%

Known prime factors:
No known factors for M6,736,817

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-05-13T00:00:00ANONYMOUSv4_computers30000315000---0.014--0.854%
2012-02-12T02:20:00kurlysmile800001440000---0.049--1.722%
2019-03-25T00:57:53takahashivaio25000044000006---0.151--2.810%
2020-10-27T01:55:25takahashivaio10000002300000012---0.695--4.745%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-06-28T00:00:00Thav4_computers?262--0.046--
2004-07-26T00:00:00ANONYMOUSv4_computers?263--0.146--
2014-06-29T00:28:00NesowaManual testing263264--0.291--
2014-07-03T07:08:00lycornManual testing264265--0.555--
2015-11-12T20:33:11snme2pm1Manual testing265266--1.109--
2016-05-02T19:59:30Gordon SpenceManual testing266267--2.218--
2018-02-27T02:58:05-Anonymous-Manual testing267268--4.437--
2020-05-08T08:18:58TJAOIManual testing268269--8.874--
2021-02-16T12:11:24-Anonymous-Manual testing269270--17.75--
2021-02-16T12:11:24-Anonymous-Manual testing270271--35.50--


ECM factoring results:
ECM Summary

B1B2factorcurvesGHz-days
50000500000061.989


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-02-14T00:00:00ANONYMOUSv4_computersBE0940D15E69C1__1.469
1999-12-23T00:00:00Masonv4_computers72E9EF42E39613D21.469
2001-07-29T00:00:00ANONYMOUSv4_computers72E9EF42E39613D21.469


PRP results:
Exponent "6736817" not found


P-1 factor-bounds graph:
B1 = 1000000, B2 = 23000000 (stage 2)
B1 = 1000000 (stage 1)
B1 = 250000, B2 = 4400000 (stage 2)
B1 = 250000 (stage 1)
B1 = 80000, B2 = 1440000 (stage 2)
B1 = 80000 (stage 1)
B1 = 30000, B2 = 315000 (stage 2)
B1 = 30000 (stage 1)
103
104
105
106
103
104
105
106
107
108
TF factor-bounds graph:
271
270
269
268
267
266
265
264
263
262
250
260
270
280
290
2100
Last modified: 2021-02-16T12:11:24+00:00