is 2 1082533 - 1
has 325875 decimal digits
takes 0.032 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LC09833B9A0FB5469double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual271441.629370.4225%2500000625000000.24795.0982%441.877271.9304%1.5079%
PrimeNet2560.008962.5000%4500650000.00032.0208%0.009263.2578%0.7578%
GPU722600.141965.0000%4500200000.00020.6530%0.142165.2285%0.2285%
Difference+11+441.4874+5.4225%+2495500+62480000+0.2477+4.4452%+441.7351+6.7019%+6.7019%

Known prime factors (1 factor, 70.5 bits, 0.00650874% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
108253316230691629174866998092270.459749662672139088
24 × 3 × 15617972336231
2016-06-161615617972336231254.5836,56968,301

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2012-01-04T19:21:00bcp19Toshiba-740Q20000010000000---0.032--2.486%
2012-02-08T00:13:00bcp19Toshiba-740Q200000100000000---0.242--3.738%
2014-08-21T02:33:00Jocelyn LaroucheManual testing259290259290---0.011--0.808%
2014-11-06T23:05:00Jocelyn LaroucheManual testing318580318580---0.014--0.904%
2016-05-26T05:58:49Jocelyn LaroucheManual testing10825331082533---0.047--1.619%
2016-07-27T11:35:29Bruno VictalManual testing25000006250000012---0.248--5.098%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-11-24T00:00:00ANONYMOUSv4_computers21257--0.018--
2016-02-23T16:28:21Mark RoseManual testing257260--0.124--
2009-02-26T17:11:00Sturle Sundeczerny.ifi260261--0.142--
2010-11-16T20:34:00Michael CManual testing261262--0.284--
2012-10-18T21:47:00dbaughManual testing262263--0.907--
2014-02-02T14:52:00lycornManual testing263264--1.814--
2014-02-03T01:04:00ANONYMOUSManual testing264265--3.452--
2014-02-22T13:31:00Never Odd Or EvenManual testing265266--6.903--
2014-02-22T13:31:00Never Odd Or EvenManual testing266267--13.81--
2014-02-22T13:31:00Never Odd Or EvenManual testing267268--27.61--
2014-02-22T13:31:00Never Odd Or EvenManual testing268269--55.22--
2014-02-22T13:31:00Never Odd Or EvenManual testing269270--110.4--
2014-04-01T16:49:00Never Odd Or EvenManual testing270271--220.9--


ECM factoring results:

Old Calculation Method

Total ECM effort:17.597 GHz-days
Estimated T-Level:25.344
DigitsB1CurvesCompleteFacMiss
2011000325 / 1003.2503.815%
2550000325 / 2801.16131.261%
3025000044 / 6400.06993.351%

New Calculation Method

Total ECM effort:17.597 GHz-days
Estimated T-Level:25.344
DigitsB1CompleteFacMiss
201100012.7310.000%
25500001.34925.941%
302500000.10889.793%
3510000000.00799.295%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002799.80
50000500000020.070
25000025000000447.727


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2004-01-18T00:00:00ANONYMOUSv4_computersC09833B9A0FB54690.032
2016-06-01T18:47:45MadPooManual testingC09833B9A0FB54690.032


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-28T23:46:31Oliver KruseGTX-0
1623069162917486699809
22CEBD4B121B09__no
2017-10-18T21:01:13kkmrkkblmbrbkc4.xlarge
1623069162917486699809
22CEBD4B121B09__no


P-1 factor-bounds graph:
B1 = 2500000, B2 = 62500000 (P-1 stage 2)
B1 = 200000, B2 = 100000000 (P-1 stage 2)
B1 = 2500000 (P-1 stage 1)
B1 = 1082533 (P-1 stage 1)
B1 = 200000, B2 = 10000000 (P-1 stage 2)
B1 = 318580 (P-1 stage 1)
B1 = 259290 (P-1 stage 1)
B1 = 200000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2020-11-20T10:35:53+00:00