is 2 1430321 - 1
has 430570 decimal digits
takes 0.055 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LBD5DFD2DE12CB38Adouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26720.774368.6567 %2500000625000000.31947.3965 %21.093770.9750 %
Target2600.107465.0000 %60004000000.00151.3037 %0.108965.4563 %
Difference+7+20.6669+3.6567 %+2494000+62100000+0.3179+6.0928%+20.9848+5.5187 %

Known prime factors (1 factor, 73.2 bits, 0.00511834% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1430321109144368804539760394392373.2093815380212013239
3 × 1271793404004413
2016-07-21312717934040044131,522.33,836,0657,164,700

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-09-29Team Prime Ribv4_computers15000243750--0.0022.389%
2009-08-07markrlounge20000050000006--0.0307.180%
2014-11-10JossManual testing244874244874--0.0163.266%
2015-01-30JossManual testing404042404042--0.0263.937%
2015-02-20JossManual testing444446444446--0.0294.072%
2015-03-01JossManual testing488890488890--0.0324.209%
2015-03-05JossManual testing537779537779--0.0354.348%
2015-03-12JossManual testing591556591556--0.0384.490%
2015-03-26alpertronManual testing20000006000000012--0.33412.614%
2016-08-27Bruno VictalManual testing25000006250000012---12.813%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-10-13ANONYMOUSv4_computers212570.013
2003-07-21ANONYMOUSv4_computers212580.027
2016-02-23Mark RoseManual testing2582600.081
2009-02-18Sturle Sundegobi.ifi2602610.107
2011-05-07GrunwalderGIMPManual testing212631.116
2016-02-23Mark RoseManual testing2612630.901
2015-03-20snme2pm1Manual testing2632653.985
2015-10-02ramgeisManual testing2652665.225


ECM factoring results:
Total ECM effort:29.431 GHz-days
Estimated T-Level:25.704
DigitsB1CompleteFacMiss
201100014.6540.000%
25500001.65119.189%
302500000.14186.866%
3510000000.01099.021%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025013.46
50000500000010.047
250000350000005015.93


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2015-11-13MadPooManual testingBD5DFD2DE12CB38A0.064


PRP results:
dateuseridcompidcofactorsres64
2017-09-30Oliver KruseGTX-2
10914436880453976039439
1F0491309B624FEA
2017-10-26kkmrkkblmbrbkc4.xlarge
10914436880453976039439
1F0491309B624FEA


CERT results:
No CERT results for M1430321


P-1 factor-bounds graph:
B1 = 2500000, B2 = 62500000 (P-1 stage 2)
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 2500000 (P-1 stage 1)
B1 = 2000000 (P-1 stage 1)
B1 = 591556 (P-1 stage 1)
B1 = 537779 (P-1 stage 1)
B1 = 488890 (P-1 stage 1)
B1 = 200000, B2 = 5000000 (P-1 stage 2)
B1 = 444446 (P-1 stage 1)
B1 = 404042 (P-1 stage 1)
B1 = 244874 (P-1 stage 1)
B1 = 200000 (P-1 stage 1)
B1 = 15000, B2 = 243750 (P-1 stage 2)
B1 = 15000 (P-1 stage 1)
100
101
102
103
104
105
106
107
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
1014
1015
1016
TF factor-bounds graph:
266
265
263
261
260
258
257
this exponent TF target: 60
TF double-checked to: 67
ECM T-Level=25.7 ~= 69-bit
250
260
270
280
JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00