is 2 72026429 - 1
has 21682116 decimal digits
takes 192.571 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
Actual27453.117563.5135 %6650006650002.57801.7288 %55.695664.1443 %
Target27453.117563.5135 %5000008500000019.78614.1177 %72.903665.0159 %
Difference---+165000-84335000-17.2080-2.3889 %-17.2080-0.8716 %

Known prime factors (1 factor, 82.4 bits, 0.00011446% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
7202642965640498827183213210897932582.44145566953504791424
27 × 19 × 547 × 153427 × 223253
2014-07-2715342722325314,3170.60951.2105

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2014-07-27TheJudgerManual testing66500066500012582.4413.2711.729%


Trial Factoring results:
575859606162636465666768697071727374
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2008-09-19Wojciech FlorekManual testing212640.026
2010-05-10lindedKA1CWHM-Lib12642650.052
2010-05-13ddboy3kitchen2652660.104
2010-05-19curtiscwde2610-26l2662670.208
2010-05-23curtiscwde2610-26l2672680.415
2010-05-29curtiscwde2610-26l2682690.830
2012-09-27E.Lechneramd_fx81502692701.660
2012-11-15RHMashManual testing2702713.320
2014-07-12brilongManual testing27127446.48


ECM factoring results:
No ECM results for M72026429


Lucas-Lehmer results:
No L-L results for M72026429


PRP results:
No PRP results for M72026429


CERT results:
No CERT results for M72026429


P-1 factor-bounds graph:
B1 = 665000 (P-1 stage 1)
104
105
106
104
105
106
TF factor-bounds graph:
274
271
270
269
268
267
266
265
264
this exponent TF target: 74
TF double-checked to: 67
250
260
270
280
290
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Last modified: 2024-03-13T02:15:48+00:00