is 2 143683273 - 1
has 43252976 decimal digits
takes 800.236 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
Actual276106.512063.1579 %10000003000000020.83534.4803 %127.347364.8085 %
Target277213.025263.6364 %90000017000000081.66984.1261 %294.695065.1368 %
Difference-1-106.5132-0.4785 %+100000-140000000-60.8345+0.3542%-167.3477-0.3282 %

Known prime factors (1 factor, 76.4 bits, 0.00005318% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1436832731003274133855589525709032476.409349126976615987
17 × 47 × 287731 × 1518623
2020-04-132877311518623106.512.86524.7290

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2020-04-13Franklin WebberManual testing10000003000000022476.40921.824.085%


Trial Factoring results:
575859606162636465666768697071727374757677
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-06-17WPSs12632640.014
2010-12-25vapaddyemily2642650.026
2012-12-16AKAxAutoI7-3930k2652660.052
2015-02-27aurashiftusslcburnin342662670.104
2016-03-31dbaughManual testing2672680.208
2016-04-17DerekManual testing2682690.416
2016-11-09Andrew BManual testing2692700.832
2016-11-19Andrew BManual testing2702711.664
2016-11-26kevshawRanger2712723.329
2020-03-27Franklin WebberManual testing2722736.657
2020-03-27Franklin WebberManual testing27327413.31
2020-03-27Franklin WebberManual testing27427526.63
2020-03-27Franklin WebberManual testing27527653.26


ECM factoring results:
No ECM results for M143683273


Lucas-Lehmer results:
No L-L results for M143683273


PRP results:
No PRP results for M143683273


CERT results:
No CERT results for M143683273


P-1 factor-bounds graph:
B1 = 1000000, B2 = 30000000 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
104
105
106
104
105
106
107
108
TF factor-bounds graph:
276
275
274
273
272
271
270
269
268
267
266
265
264
this exponent TF target: 77
TF double-checked to: 67
250
260
270
280
JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00