is 2 33947539 - 1
has 10219228 decimal digits
takes 40.171 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L7A020555814EF555double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual274112.699464.8649 %38000074100001.30923.0434 %114.008665.9342 %
Target27114.082963.3803 %240000350000003.66133.8395 %17.744164.7863 %
Difference+3+98.6165+1.4846 %+140000-27590000-2.3521-0.7961 %+96.2644+1.1479 %

Known prime factors:
No known factors for M33947539

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2004-06-04ANONYMOUSv4_computers3800007410000--1.3094.132%


Trial Factoring results:
575859606162636465666768697071727374
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2004-06-04ANONYMOUSv4_computers212680.881
2013-01-10Carsten KossendeyManual testing2682691.761
2013-08-06Le ComteManual testing2692703.522
2014-05-09Bill StaffenManual testing2702717.044
2019-03-17Architects CubedManual testing27127214.09
2019-12-08ANONYMOUSManual testing27227328.18
2020-04-21ANONYMOUSManual testing27327456.35


ECM factoring results:
No ECM results for M33947539


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2004-07-13ANONYMOUSv4_computers7A020555814EF55540.17
2015-02-18Bill Staffenman018-main7A020555814EF55540.17


PRP results:
No PRP results for M33947539


CERT results:
No CERT results for M33947539


P-1 factor-bounds graph:
B1 = 380000, B2 = 7410000 (P-1 stage 2)
B1 = 380000 (P-1 stage 1)
104
105
106
104
105
106
107
TF factor-bounds graph:
274
273
272
271
270
269
268
this exponent TF target: 71
TF double-checked to: 67
250
260
270
280
JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00