is 2 146040847 - 1
has 43962676 decimal digits
takes 837.453 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
Actual27313.098061.6438 %9454742174590217.28445.5306 %30.382463.7652 %
Target277209.586363.6364 %90000017000000084.08834.1340 %293.674665.1396 %
Difference-4-196.4883-1.9925 %+45474-148254098-66.8039+1.3966%-263.2922-1.3745 %

Known prime factors (1 factor, 105.2 bits, 0.00007204% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1460408474676360582949902035791308010458332105.205160104541948798134394253
1327 × 2267 × 7523 × 336041 × 21052219
2019-03-0933604121052219879,073,86512.17917.812

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2017-02-23Yves-Andre Schaefferyaschaeffer24300002430000--20.212.292%
2019-03-09One ManX566094547421745902232105.20517.283.823%


Trial Factoring results:
575859606162636465666768697071727374757677
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-06-20Torchwood Instituteph2-940-12632640.013
2010-12-30Richard2642650.026
2012-12-30Richardsvn_022652660.051
2015-03-05aurashiftusslcburnin322662670.102
2016-03-24DerekManual testing2672680.205
2016-06-24Josh FamestadManual testing2682690.409
2016-12-22guruManual testing2692700.819
2016-12-22guruManual testing2702711.637
2016-12-23Yves-Andre Schaefferyaschaeffer2712723.275
2017-02-27arnaudstm-15-1552722736.550


ECM factoring results:
No ECM results for M146040847


Lucas-Lehmer results:
No L-L results for M146040847


PRP results:
No PRP results for M146040847


CERT results:
No CERT results for M146040847


P-1 factor-bounds graph:
B1 = 2430000 (P-1 stage 1)
B1 = 945474, B2 = 21745902 (P-1 stage 2)
B1 = 945474 (P-1 stage 1)
104
105
106
107
104
105
106
107
108
TF factor-bounds graph:
273
272
271
270
269
268
267
266
265
264
this exponent TF target: 77
TF double-checked to: 67
250
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Last modified: 2024-03-13T02:15:48+00:00