is 2 299903 - 1
has 90280 decimal digits
takes 0.002 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LF22023EB64BC3F8Bdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual268198.747272.0588%1200000004010455449023.699816.5394%222.447076.6801%4.6213%
PrimeNet2400.000052.5000%3200900000.000115.5669%0.000159.8943%7.3943%
GPU722440.000056.8182%55001400000.000111.2429%0.000161.6731%4.8549%
Difference+24+198.7472+15.2406%+119994500+40104414490+23.6996+5.2965%+222.4468+15.0071%-0.2336%

Known prime factors:
No known factors for M299903

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-05-20T00:00:00ANONYMOUSv4_computers10000010000000---0.007--2.476%
2002-06-09T00:00:00ANONYMOUSv4_computers327683276800---0.002--1.396%
2002-06-15T00:00:00ANONYMOUSv4_computers327683276800---0.002--1.396%
2002-08-17T00:00:00ANONYMOUSv4_computers655366553600---0.004--2.028%
2003-03-16T00:00:00ANONYMOUSv4_computers13107213107200---0.009--2.786%
2003-12-13T00:00:00ANONYMOUSv4_computers26214426214400---0.017--3.660%
2006-01-15T00:00:00Jocelyn Larouchev4_computers299903299903---0.003--1.041%
2008-11-16T04:03:00Jayson Kingatlas10000000400000000---0.322--8.635%
2021-12-05T03:40:41Seth_TrManual testing120000000120000000---1.237--7.464%
2021-12-05T12:38:01Seth_TrManual testing12000000040104554490---23.70--16.539%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-11-24T00:00:00ANONYMOUSv4_computers252253--0.002--
2000-05-05T00:00:00ANONYMOUSv4_computers21254--0.008--
2022-03-07T06:12:01LordJuliusManual testing254255--0.008--
2001-03-17T00:00:00ANONYMOUSv4_computers21256--0.032--
2002-02-17T00:00:00ANONYMOUSv4_computers21257--0.064--
2004-02-07T00:00:00ANONYMOUSv4_computers21258--0.128--
2009-01-02T11:07:00Sturle Sundegoldiek.ifi258259--0.128--
2009-01-24T11:58:00Sturle Sundeghibu.ifi259260--0.256--
2013-06-05T19:45:00lycornasteroid260261--0.512--
2015-08-13T13:31:00NRManual testing261262--1.024--
2016-01-03T22:09:37Gordon SpenceManual testing262263--3.273--
2016-01-03T22:09:37Gordon SpenceManual testing263264--6.546--
2017-08-26T20:20:25ConductorManual testing264265--12.46--
2019-05-28T15:00:23Gordon SpenceManual testing265266--24.92--
2022-02-20T07:23:32LordJuliusManual testing266267--49.83--
2022-12-02T20:43:41Gordon SpenceManual testing267268--99.7--


ECM factoring results:
Total ECM effort:24.564 GHz-days
Estimated T-Level:29.888
DigitsB1CompleteFacMiss
201100064.2620.000%
25500009.2820.009%
302500000.97837.624%
3510000000.08092.274%
4030000000.00599.463%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002812.143
2500002500000058822.42


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2016-06-01T06:39:07MadPooManual testingF22023EB64BC3F8B0.002


PRP results:
No PRP results for M299903


P-1 factor-bounds graph:
B1 = 120000000, B2 = 40104554490 (P-1 stage 2)
B1 = 120000000 (P-1 stage 1)
B1 = 10000000, B2 = 400000000 (P-1 stage 2)
B1 = 10000000 (P-1 stage 1)
B1 = 262144, B2 = 26214400 (P-1 stage 2)
B1 = 131072, B2 = 13107200 (P-1 stage 2)
B1 = 100000, B2 = 10000000 (P-1 stage 2)
B1 = 65536, B2 = 6553600 (P-1 stage 2)
B1 = 299903 (P-1 stage 1)
B1 = 262144 (P-1 stage 1)
B1 = 32768, B2 = 3276800 (P-1 stage 2)
B1 = 131072 (P-1 stage 1)
B1 = 100000 (P-1 stage 1)
B1 = 65536 (P-1 stage 1)
B1 = 32768 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-12-02T20:43:41+00:00