is 2 74207333 - 1
has 22338634 decimal digits
takes 205.161 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L40D764986085D2BCdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual276206.232964.4737 %645000129000005.26233.3260 %211.495265.6553 %
Target27451.556463.5135 %5000008500000020.46024.1329 %72.016665.0215 %
Difference+2+154.6765+0.9602 %+145000-72100000-15.1978-0.8069 %+139.4786+0.6338 %

Known prime factors:
No known factors for M74207333

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2015-06-14TheJudgerManual testing6450001290000012--5.3674.043%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2008-09-12lycornManual testing212640.025
2017-07-02BloodERazorManual testing22264
2010-08-25PalantsevichOffice552642650.050
2010-08-26PalantsevichOffice552652660.101
2010-08-27Triumph83Asus2662670.201
2010-08-30seekualinux-seekua2672680.403
2010-11-08dtlgchmXP28002682690.806
2012-10-23Clown_RoyalManual testing2692701.611
2013-05-10SMoffatManual testing2702713.222
2015-06-08kdgehmanManual testing27127596.67
2021-12-15LordJuliusManual testing275276103.1


ECM factoring results:
No ECM results for M74207333


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2015-09-19curtisccsc143-09l40D764986085D2BC209.2
2017-12-26theboss24611Manual testing40D764986085D2BC209.2


PRP results:
No PRP results for M74207333


CERT results:
No CERT results for M74207333


P-1 factor-bounds graph:
B1 = 645000, B2 = 12900000 (P-1 stage 2)
B1 = 645000 (P-1 stage 1)
104
105
106
104
105
106
107
108
TF factor-bounds graph:
276
275
271
270
269
268
267
266
265
264
this exponent TF target: 74
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00