is 2 143683843 - 1
has 43253147 decimal digits
takes 800.239 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
Actual276106.511663.1579 %100000010000008.07571.8083 %114.587363.8241 %
Target277213.024463.6364 %90000017000000081.66984.1261 %294.694265.1368 %
Difference-1-106.5128-0.4785 %+100000-169000000-73.5941-2.3177 %-180.1069-1.3126 %

Known prime factors (1 factor, 79.4 bits, 0.00005527% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1436838438017798639043901401677932479.4082790083586170472
23 × 3 × 19 × 569 × 22543 × 477011
2020-04-1722543477011852.100.38200.3920

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2020-04-17Franklin WebberManual testing1000000100000012479.4088.4581.618%


Trial Factoring results:
575859606162636465666768697071727374757677
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-06-17Torchwood InstituteHTPC-V642632640.014
2010-12-21oodairacom22642650.026
2012-12-16sasaki3mate_ma12652660.052
2015-02-27aurashiftusslcburnin322662670.104
2016-03-31dbaughManual testing2672680.208
2016-04-18DerekManual testing2682690.416
2016-11-09vebisManual testing2692700.832
2016-11-14Jens PedersenDragonfly2702711.664
2016-11-18arnaudstm-14-1512712723.329
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 M143683843


Lucas-Lehmer results:
No L-L results for M143683843


PRP results:
No PRP results for M143683843


CERT results:
No CERT results for M143683843


P-1 factor-bounds graph:
B1 = 1000000 (P-1 stage 1)
103
104
105
106
103
104
105
106
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
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Last modified: 2024-03-13T02:15:48+00:00