is 2 1759283 - 1
has 529597 decimal digits
takes 0.095 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L8FDF7C3F4E45683Adouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26833.880269.1176%17592831935211300.96028.0098%34.840471.5913%2.4736%
PrimeNet2570.010963.1579%80001400000.00122.8053%0.012164.1914%1.0335%
GPU722610.174665.5738%80001100000.00111.4142%0.175766.0606%0.4869%
Difference+7+33.7056+3.5439%+1751283+193411130+0.9592+6.5956%+34.6648+5.5306%+5.5306%

Known prime factors:
No known factors for M1759283

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2011-02-09T06:19:00Carsten Kossendeyleela950001567500---0.014--2.137%
2014-04-08T23:01:00Jocelyn LaroucheManual testing100000100000---0.008--0.770%
2014-05-09T20:31:00Jocelyn LaroucheManual testing136483136483---0.011--0.923%
2014-09-17T22:20:00ANONYMOUSManual testing172966172966---0.014--1.052%
2015-04-24T13:46:00mikrMSI247540086660000---0.556--7.323%
2018-07-10T16:02:44Jocelyn Larouchelow 4M17592838796415012---0.508--7.124%
2018-08-13T11:55:07Jocelyn Larouchelow 4M175928317592830012---0.885--7.902%
2018-10-19T02:38:30Jocelyn Larouchelow 4M175928319352113012---0.960--8.010%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2016-02-23T16:28:50Mark RoseManual testing21260--0.087--
2010-04-24T06:29:00Architects Cubedi4l_1260261--0.087--
2016-02-23T16:28:50Mark RoseManual testing261262--0.175--
2010-12-13T03:32:00GrunwalderGIMPManual testing21263--0.907--
2016-02-23T16:28:50Mark RoseManual testing262263--0.558--
2015-04-28T23:51:00snme2pm1Manual testing263264--1.116--
2015-04-28T23:51:00snme2pm1Manual testing264265--2.124--
2015-09-06T20:47:00ramgeisManual testing265266--4.248--
2018-05-14T16:20:07TJAOIManual testing266267--8.495--
2019-06-17T12:15:03TJAOIManual testing267268--16.99--


ECM factoring results:

Old Calculation Method

Total ECM effort:22.751 GHz-days
DigitsB1CurvesCompleteFacMiss
2011000329 / 1003.2903.664%
2550000329 / 2801.17530.817%

New Calculation Method

Total ECM effort:22.751 GHz-days
DigitsB1CompleteFacMiss
201100012.6720.000%
25500001.17230.977%
302500000.07492.876%
3510000000.00399.655%


ECM Summary

B1B2factorcurvesGHz-days
500005000030.126
50000500000032922.63


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-12-06T00:00:00RonLavalleev4_computers8FDF7C3F4E45683A0.095
2015-06-28T05:06:00MadPooManual testing8FDF7C3F4E45683A0.095


PRP results:
No PRP results for M1759283


P-1 factor-bounds graph:
B1 = 1759283, B2 = 193521130 (P-1 stage 2)
B1 = 1759283, B2 = 175928300 (P-1 stage 2)
B1 = 2475400, B2 = 86660000 (P-1 stage 2)
B1 = 1759283, B2 = 87964150 (P-1 stage 2)
B1 = 2475400 (P-1 stage 1)
B1 = 1759283 (P-1 stage 1)
B1 = 95000, B2 = 1567500 (P-1 stage 2)
B1 = 172966 (P-1 stage 1)
B1 = 136483 (P-1 stage 1)
B1 = 100000 (P-1 stage 1)
B1 = 95000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2020-08-21T10:53:56+00:00