is 2 29863 - 1
has 8990 decimal digits
takes 0.000 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L3E77D8265D14CE88double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual267995.007877.6119%1200000000096000000000050.837522.2660%1,045.845382.5969%4.9849%
PrimeNet2400.000062.5000%500100000.00004.0987%0.000064.0370%1.5370%
GPU722440.000165.9091%500100000.00001.7562%0.000166.5078%0.5987%
Difference+23+995.0077+11.7028%+11999999500+959999990000+50.8375+20.5098%+1,045.8452+16.0891%+16.0891%

Known prime factors:
No known factors for M29863

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-04-29T00:00:00ANONYMOUSv4_computers10000010000000---0.001--1.949%
2001-08-18T00:00:00Alex Kruppav4_computers1000000100000000---0.005--4.751%
2002-04-28T00:00:00ANONYMOUSv4_computers163841638400---8.36694e-5--0.651%
2002-06-09T00:00:00ANONYMOUSv4_computers327683276800---0.000--1.048%
2002-07-20T00:00:00ANONYMOUSv4_computers655366553600---0.000--1.570%
2003-02-02T00:00:00ANONYMOUSv4_computers13107213107200---0.001--2.216%
2003-03-27T00:00:00ANONYMOUSv4_computers26214426214400---0.001--2.979%
2003-04-03T00:00:00ANONYMOUSv4_computers52428852428800---0.003--3.851%
2003-04-27T00:00:00ANONYMOUSv4_computers1048576104857600---0.005--4.821%
2003-05-19T00:00:00ANONYMOUSv4_computers2097152209715200---0.011--5.882%
2003-07-13T00:00:00ANONYMOUSv4_computers4194304419430400---0.021--7.029%
2003-09-29T00:00:00ANONYMOUSv4_computers8388608838860800---0.043--8.254%
2003-10-08T00:00:00ANONYMOUSv4_computers167772161677721600---0.086--9.542%
2013-11-08T19:15:00David Campeaui5-2500k20075500010640015000---0.615--13.463%
2017-06-22T14:08:07mikrS0521200000000096000000000012---50.84--22.266%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-05-07T00:01:56ATH5960X50000000010150000000027--4.914


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-10-21T00:00:00ANONYMOUSv4_computers252253--0.020--
2000-03-15T00:00:00ANONYMOUSv4_computers253254--0.040--
2000-10-15T00:00:00ANONYMOUSv4_computers21256--0.321--
2002-12-02T00:00:00ANONYMOUSv4_computers21257--0.643--
2016-02-23T04:50:56LaurVManual testing257258--0.643--
2009-01-18T03:45:00Sturle Sundehoffman.ifi258259--1.286--
2009-02-08T09:26:00Sturle Sundeginjtje.ifi259260--2.572--
2012-04-02T22:31:00bcp19Manual testing260261--5.143--
2012-04-02T22:31:00bcp19Manual testing261262--10.29--
2016-10-21T00:03:19Sid & AndyMrs_Potato_Head262263--32.87--
2018-05-27T06:44:06YxinityManual testing263264--65.74--
2018-05-26T17:08:41YxinityYGSMainFrame263264--65.74--
2019-07-26T03:57:44YxinityManual testing264265--125.1--
2019-07-26T02:37:31YxinityYGSMainFrame264265--125.1--
2020-05-12T03:32:35YxinityManual testing265266--250.2--


ECM factoring results:

Old Calculation Method

Total ECM effort:4,948.862 GHz-days
DigitsB1CurvesCompleteFacMiss
201100013936 / 100139.3600.000%
255000013936 / 28049.7710.000%
3025000013936 / 64021.7750.000%
35100000013936 / 15668.8990.014%
40300000013695 / 45882.9855.053%
45110000009852 / 92011.07134.273%

New Calculation Method

Total ECM effort:4,948.862 GHz-days
DigitsB1CompleteFacMiss
20110003,544.7670.000%
25500001,197.0300.000%
30250000289.5600.000%
35100000057.5530.000%
4030000009.8130.005%
45110000001.45823.278%
50440000000.19482.405%
551100000000.02397.690%
602600000000.00399.747%


ECM Summary

B1B2factorcurvesGHz-days
10000001000000002412.770
300000030000000031010.69
300000040000000093335.66
30000005000000002,600109.1
1100000011000000008,7601,107
11000000351333910308201,147
430000002404906604262722,536


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2015-04-11T05:58:00MadPooManual testing3E77D8265D14CE881.64495e-5


PRP results:
No PRP results for M29863


P-1 factor-bounds graph:
B1 = 12000000000, B2 = 960000000000 (P-1 stage 2)
B1 = 12000000000 (P-1 stage 1)
B1 = 200755000, B2 = 10640015000 (P-1 stage 2)
B1 = 200755000 (P-1 stage 1)
B1 = 16777216, B2 = 1677721600 (P-1 stage 2)
B1 = 8388608, B2 = 838860800 (P-1 stage 2)
B1 = 4194304, B2 = 419430400 (P-1 stage 2)
B1 = 16777216 (P-1 stage 1)
B1 = 2097152, B2 = 209715200 (P-1 stage 2)
B1 = 8388608 (P-1 stage 1)
B1 = 1048576, B2 = 104857600 (P-1 stage 2)
B1 = 1000000, B2 = 100000000 (P-1 stage 2)
B1 = 4194304 (P-1 stage 1)
B1 = 524288, B2 = 52428800 (P-1 stage 2)
B1 = 2097152 (P-1 stage 1)
B1 = 262144, B2 = 26214400 (P-1 stage 2)
B1 = 1048576 (P-1 stage 1)
B1 = 1000000 (P-1 stage 1)
B1 = 131072, B2 = 13107200 (P-1 stage 2)
B1 = 100000, B2 = 10000000 (P-1 stage 2)
B1 = 524288 (P-1 stage 1)
B1 = 65536, B2 = 6553600 (P-1 stage 2)
B1 = 262144 (P-1 stage 1)
B1 = 32768, B2 = 3276800 (P-1 stage 2)
B1 = 131072 (P-1 stage 1)
B1 = 16384, B2 = 1638400 (P-1 stage 2)
B1 = 100000 (P-1 stage 1)
B1 = 65536 (P-1 stage 1)
B1 = 32768 (P-1 stage 1)
B1 = 16384 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-05-07T00:01:56+00:00