is 2 1482937 - 1
has 446409 decimal digits
takes 0.057 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L4E6D3DC703B534BBdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26840.193869.1176%14829371631230700.56967.5502%40.763471.4493%2.3317%
PrimeNet2570.012963.1579%65001000000.00062.3351%0.013664.0182%0.8603%
GPU722610.207165.5738%6000500000.00050.9455%0.207665.8993%0.3255%
Difference+7+39.9867+3.5439%+1476937+163073070+0.5692+6.6047%+40.5558+5.5501%+5.5501%

Known prime factors:
No known factors for M1482937

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-09-29T00:00:00Team Prime Ribv4_computers20000270000---0.002--0.827%
2010-12-25T14:03:00Rob_Deetwopc100000200000---0.006--1.068%
2010-12-26T18:45:00Rob_Deetwopc200000300000---0.011--1.344%
2010-12-27T13:29:00Rob_Deetwopc2000001000000---0.013--2.083%
2010-12-28T13:25:00Rob_Deetwopc2000002000000---0.017--2.527%
2010-12-29T12:57:00Rob_Deetwopc2000003000000---0.020--2.793%
2010-12-30T14:19:00Rob_Deetwopc2000004000000---0.023--2.985%
2010-12-31T13:36:00Rob_Deetwopc2000005000000---0.026--3.135%
2014-11-25T02:49:00Jocelyn LaroucheManual testing243282243282---0.013--1.221%
2015-01-29T22:02:00Jocelyn LaroucheManual testing323808323808---0.018--1.406%
2015-02-12T12:33:00Jocelyn LaroucheManual testing391806391806---0.022--1.538%
2015-02-23T15:50:00Jocelyn LaroucheManual testing430986430986---0.024--1.607%
2015-03-01T03:15:00Jocelyn LaroucheManual testing474084474084---0.026--1.678%
2015-03-05T14:27:00Jocelyn LaroucheManual testing521492521492---0.029--1.750%
2015-03-14T11:30:00Jocelyn LaroucheManual testing573641573641---0.032--1.824%
2015-03-15T22:14:00alpertronManual testing200000060000000---0.286--6.653%
2018-03-17T12:03:58Jocelyn Larouchelow 4M14829376000000012---0.259--6.472%
2018-03-18T11:02:22Jocelyn Larouchelow 4M148293714829370012---0.525--7.447%
2018-10-15T23:02:59Jocelyn Larouchelow 4M148293716312307012---0.570--7.550%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-11-14T00:00:00ANONYMOUSv4_computers21257--0.013--
2003-07-30T00:00:00ANONYMOUSv4_computers21258--0.026--
2016-02-23T16:28:34Mark RoseManual testing258260--0.078--
2010-05-07T10:20:00Architects Cubedm1_f2260261--0.104--
2016-02-23T16:28:34Mark RoseManual testing261262--0.207--
2011-04-05T20:59:00GrunwalderGIMPManual testing21263--1.076--
2016-02-23T16:28:34Mark RoseManual testing262263--0.662--
2015-04-05T20:45:00snme2pm1Manual testing263264--1.324--
2015-04-05T20:45:00snme2pm1Manual testing264265--2.520--
2015-09-23T08:42:49ramgeisManual testing265266--5.039--
2018-02-19T12:08:17TJAOIManual testing266267--10.08--
2020-05-28T00:31:19Gordon SpenceManual testing267268--20.16--


ECM factoring results:

Old Calculation Method

Total ECM effort:26.553 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:26.553 GHz-days
Estimated T-Level:25.391
DigitsB1CompleteFacMiss
201100014.6540.000%
25500001.67418.740%
302500000.14486.623%
3510000000.01099.005%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025111.93
250000400000005014.62


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-12-06T00:00:00ANONYMOUSv4_computers4E6D3DC703B534BB0.057
2015-07-19T16:37:00MadPooManual testing4E6D3DC703B534BB0.057


PRP results:
No PRP results for M1482937


P-1 factor-bounds graph:
B1 = 1482937, B2 = 163123070 (P-1 stage 2)
B1 = 1482937, B2 = 148293700 (P-1 stage 2)
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 1482937, B2 = 60000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
B1 = 1482937 (P-1 stage 1)
B1 = 573641 (P-1 stage 1)
B1 = 521492 (P-1 stage 1)
B1 = 474084 (P-1 stage 1)
B1 = 200000, B2 = 5000000 (P-1 stage 2)
B1 = 430986 (P-1 stage 1)
B1 = 200000, B2 = 4000000 (P-1 stage 2)
B1 = 391806 (P-1 stage 1)
B1 = 200000, B2 = 3000000 (P-1 stage 2)
B1 = 323808 (P-1 stage 1)
B1 = 200000, B2 = 2000000 (P-1 stage 2)
B1 = 200000, B2 = 1000000 (P-1 stage 2)
B1 = 243282 (P-1 stage 1)
B1 = 200000, B2 = 300000 (P-1 stage 2)
B1 = 200000 (P-1 stage 1)
B1 = 100000, B2 = 200000 (P-1 stage 2)
B1 = 100000 (P-1 stage 1)
B1 = 20000, B2 = 270000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-04-07T09:48:14+00:00