is 2 347169761 - 1
has 104508512 decimal digits
takes 5,473.147 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2822,821.290664.6341 %16000000480000000943.63266.1087 %3,764.923266.7945 %
Target2811,410.645064.1975 %2000000400000000541.40324.0763 %1,952.048265.6569 %
Difference+1+1,410.6455+0.4366 %+14000000+80000000+402.2294+2.0324%+1,812.8749+1.1376 %

Known prime factors (1 factor, 89.5 bits, 0.00002578% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3471697618704460197886716107416938572789.4921253631677599754448
24 × 3 × 19 × 2777 × 9883 × 50085319
2020-07-25988350085319361,12562.592116.51

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2020-07-25Roland ClarksonManual testing1600000048000000022789.4921,0336.585%


Trial Factoring results:
5758596061626364656667686970717273747576777879808182
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2011-02-03Architects Cubedm1_692642650.011
2014-02-23tscxw6600-22652660.022
2016-03-09BrionH2662670.043
2016-07-03Jacques MOLNEManual testing2672690.258
2016-09-16Jacques MOLNEManual testing2692700.344
2016-09-16Jacques MOLNEManual testing2702710.689
2016-09-16Jacques MOLNEManual testing2712721.378
2020-07-09Roland ClarksonManual testing2722732.755
2020-07-09Roland ClarksonManual testing2732745.510
2020-07-09Roland ClarksonManual testing27427511.02
2020-07-09Roland ClarksonManual testing27527622.04
2020-07-09Roland ClarksonManual testing27627744.08
2020-07-09Roland ClarksonManual testing27727888.17
2020-07-09Roland ClarksonManual testing278279176.3
2020-07-09Roland ClarksonManual testing279280352.7
2020-07-09Roland ClarksonManual testing280281705.3
2020-07-09Roland ClarksonManual testing2812821,411


ECM factoring results:
No ECM results for M347169761


Lucas-Lehmer results:
No L-L results for M347169761


PRP results:
No PRP results for M347169761


CERT results:
No CERT results for M347169761


P-1 factor-bounds graph:
B1 = 16000000, B2 = 480000000 (P-1 stage 2)
B1 = 16000000 (P-1 stage 1)
102
103
104
105
106
107
108
102
103
104
105
106
107
108
109
TF factor-bounds graph:
282
281
280
279
278
277
276
275
274
273
272
271
270
269
267
266
265
this exponent TF target: 81
TF double-checked to: 67
250
260
270
280
290
JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00