is 2 1845133 - 1
has 555441 decimal digits
takes 0.100 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L2DBCE77CB33CAC20double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26832.303869.1176%18451331845133000.92808.0314%33.231971.5979%2.4803%
PrimeNet2570.010463.1579%90001600000.00143.0216%0.011864.2711%1.1132%
GPU722610.166565.5738%90001500000.00131.6301%0.167866.1349%0.5612%
Difference+7+32.1374+3.5439%+1836133+184363300+0.9267+6.4013%+33.0641+5.4630%+5.4630%

Known prime factors (1 factor, 70.5 bits, 0.00382308% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
184513317175363179839916976012270.541465423445893600
25 × 32 × 52 × 64642145263
2020-01-203264642145263217.02277.04517.43

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2012-01-01T09:36:00markrtiny2750006000000---0.046--3.531%
2015-10-06T21:34:56Bruno Victal5820K-linux5000001500000012---0.101--4.604%
2016-10-19T05:05:45Jocelyn Larouchelow 4M184513318451330012---0.928--8.031%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-01-16T00:00:00ANONYMOUSv4_computers21258--0.021--
2016-02-23T16:28:54Mark RoseManual testing258260--0.062--
2010-04-09T12:50:00Architects CubedManual testing260261--0.083--
2016-02-23T16:28:54Mark RoseManual testing261262--0.166--
2011-01-21T16:11:00GrunwalderGIMPManual testing21263--0.865--
2016-02-23T16:28:54Mark RoseManual testing262263--0.532--
2015-04-27T21:09:00snme2pm1Manual testing263264--1.064--
2015-04-27T21:09:00snme2pm1Manual testing264265--2.025--
2015-09-07T08:31:00ramgeisManual testing265266--4.050--
2017-11-10T15:24:09TJAOIManual testing266267--8.100--
2019-06-24T09:36:01TJAOIManual testing267268--16.20--


ECM factoring results:

Old Calculation Method

Total ECM effort:18.798 GHz-days
Estimated T-Level:24.482
DigitsB1CurvesCompleteFacMiss
2011000251 / 1002.5108.025%
2550000251 / 2800.89640.737%

New Calculation Method

Total ECM effort:18.798 GHz-days
Estimated T-Level:24.482
DigitsB1CompleteFacMiss
20110008.4620.021%
25500000.76646.480%
302500000.04795.376%
3510000000.00299.783%


ECM Summary

B1B2factorcurvesGHz-days
500005000000845.807
50000500000030.207
50000660000016412.78


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-12-13T00:00:00ANONYMOUSv4_computers2DBCE77CB33CAC200.100
1999-02-07T00:00:00ANONYMOUSv4_computers2DBCE77CB33CAC200.100
1999-02-21T00:00:00ANONYMOUSv4_computers2DBCE77CB33CAC200.100
2016-06-02T10:52:58MadPooManual testing2DBCE77CB33CAC200.100


PRP results:
dateuseridcompidcofactorsres64PRP
2020-01-20T23:53:27mrhx
1717536317983991697601
351B193347D4CC13no
2020-01-30T20:08:02krackerGRID-11
1717536317983991697601
351B193347D4CC13no


P-1 factor-bounds graph:
B1 = 1845133, B2 = 184513300 (P-1 stage 2)
B1 = 1845133 (P-1 stage 1)
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 275000, B2 = 6000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 275000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-06-04T15:57:39+00:00