is 2 109042939 - 1
has 32825196 decimal digits
takes 478.577 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
Actual277280.698364.9351 %8260008260005.25661.4311 %285.954865.4369 %
Target276140.348364.4737 %70000012000000045.81873.9838 %186.167065.8890 %
Difference+1+140.3500+0.4614 %+126000-119174000-40.5621-2.5528 %+99.7878-0.4521 %

Known prime factors (1 factor, 81.4 bits, 0.00007464% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
10904293931671536243511120908069272581.38914522506699636517
457 × 16141 × 34283 × 57427
2022-03-1234283574274,682.70.22620.4440

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2022-03-12FilenSirrah482600082600012581.3895.2571.604%


Trial Factoring results:
575859606162636465666768697071727374757677
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-05-04Richard2632640.018
2010-09-18ANONYMOUS2642650.034
2012-05-27Richard2652660.069
2013-10-12Cow_tippingManual testing2662670.137
2013-10-19Per Jessenbeaufort42672680.274
2013-10-22SMoffatManual testing2682690.548
2014-07-31James P McMillanlazarus2692701.096
2014-08-07James P McMillanlazarus2702712.193
2015-01-30RedarmManual testing2712724.386
2019-07-15Niels_Mache_NextcloudManual testing27227426.32
2021-04-26TheJudgerManual testing274276105.3
2021-07-25hktManual testing276277140.4


ECM factoring results:
No ECM results for M109042939


Lucas-Lehmer results:
No L-L results for M109042939


PRP results:
No PRP results for M109042939


CERT results:
No CERT results for M109042939


P-1 factor-bounds graph:
B1 = 826000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
277
276
274
272
271
270
269
268
267
266
265
264
this exponent TF target: 76
TF double-checked to: 67
250
260
270
280
290
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Last modified: 2024-03-13T02:15:48+00:00