is 2 1465493 - 1
has 441158 decimal digits
takes 0.056 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LA5EADA78C23E2549double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26840.672269.1176%14654931612042300.56297.5188%41.235271.4396%2.3220%
PrimeNet2560.006662.5000%70001200000.00072.9101%0.007363.5913%1.0913%
GPU722600.104865.0000%65001000000.00061.4461%0.105465.5061%0.5061%
Difference+8+40.5674+4.1176%+1458993+161104230+0.5623+6.0726%+41.1297+5.9335%+5.9335%

Known prime factors:
No known factors for M1465493

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-09-29T00:00:00Team Prime Ribv4_computers20000265000---0.002--0.821%
2009-04-13T05:55:00axnManual testing80000016000000---0.090--4.789%
2015-05-23T19:25:00alpertronManual testing200000060000000---0.286--6.645%
2016-08-24T04:09:03Bruno Victal5820K-factoring25000006250000012---0.319--6.816%
2016-08-27T10:54:02Bruno VictalManual testing25000006250000012---0.319--6.816%
2018-06-07T14:10:53Jocelyn Larouchelow 4M146549314654930012---0.519--7.416%
2018-10-15T08:21:21Jocelyn Larouchelow 4M146549316120423012---0.563--7.519%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-10-06T00:00:00ANONYMOUSv4_computers21257--0.013--
2003-07-30T00:00:00ANONYMOUSv4_computers21258--0.026--
2016-02-23T16:28:33Mark RoseManual testing258260--0.079--
2010-05-11T03:50:00Architects Cubedm1_tt260261--0.105--
2016-02-23T16:28:33Mark RoseManual testing261262--0.210--
2011-04-05T20:59:00GrunwalderGIMPManual testing21263--1.089--
2016-02-23T16:28:33Mark RoseManual testing262263--0.670--
2015-03-31T22:05:00snme2pm1Manual testing263264--1.340--
2015-03-31T22:05:00snme2pm1Manual testing264265--2.550--
2015-09-20T20:59:00ramgeisManual testing265266--5.099--
2018-03-12T16:50:51TJAOIManual testing266267--10.20--
2020-05-23T20:04:18Gordon SpenceManual testing267268--20.40--
2020-05-24T12:17:17YxinityManual testing267268--20.40--


ECM factoring results:

Old Calculation Method

Total ECM effort:25.582 GHz-days
Estimated T-Level:25.391
DigitsB1CurvesCompleteFacMiss
2011000301 / 1003.0104.855%
2550000301 / 2801.07534.064%
3025000050 / 6400.07892.479%

New Calculation Method

Total ECM effort:25.582 GHz-days
Estimated T-Level:25.391
DigitsB1CompleteFacMiss
201100014.6540.000%
25500001.65119.189%
302500000.14186.866%
3510000000.01099.021%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025111.90
250000350000005013.68


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-01-10T00:00:00ANONYMOUSv4_computersA5EADA78C23E25490.056
2015-07-19T16:38:00MadPooManual testingA5EADA78C23E25490.056


PRP results:
No PRP results for M1465493


P-1 factor-bounds graph:
B1 = 1465493, B2 = 161204230 (P-1 stage 2)
B1 = 1465493, B2 = 146549300 (P-1 stage 2)
B1 = 2500000, B2 = 62500000 (P-1 stage 2)
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 2500000 (P-1 stage 1)
B1 = 2000000 (P-1 stage 1)
B1 = 800000, B2 = 16000000 (P-1 stage 2)
B1 = 1465493 (P-1 stage 1)
B1 = 800000 (P-1 stage 1)
B1 = 20000, B2 = 265000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-01-25T11:44:09+00:00