is 2 119728991 - 1
has 36042018 decimal digits
takes 552.915 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
Actual277255.645464.9351 %5270005270003.52891.1822 %259.174365.3496 %
Target276127.822064.4737 %80000014000000056.14084.2167 %183.962765.9717 %
Difference+1+127.8234+0.4614 %-273000-139473000-52.6119-3.0345 %+75.2115-0.6221 %

Known prime factors (1 factor, 82.2 bits, 0.00006868% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
11972899156514494050636517534191692582.22523601006564331824
24 × 34 × 2003 × 21713 × 418721
2023-01-202171341872113,1100.29020.2959

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2023-01-20tottenhoffpc-201152700052700012582.2253.5291.333%


Trial Factoring results:
575859606162636465666768697071727374757677
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-05-22Richardsvn_022632640.016
2010-10-17Torchwood InstituteHTPC-V642642650.031
2012-07-29Richard172.26.176.222652660.062
2014-12-17Robert FolzRobert_Study_Desktop2662670.125
2015-04-28David HruskaManual testing2672680.250
2015-05-03SMoffatManual testing2682690.499
2015-05-08SMoffatManual testing2692700.999
2015-05-16SMoffatManual testing2702711.997
2015-06-04SMoffatManual testing2712723.994
2020-10-23SRBaseManual testing2722737.989
2021-04-21ixfd64Manual testing27327415.98
2021-07-09TheJudgerManual testing27427695.87
2022-05-22TheJudgerManual testing276277127.8


ECM factoring results:
No ECM results for M119728991


Lucas-Lehmer results:
No L-L results for M119728991


PRP results:
No PRP results for M119728991


CERT results:
No CERT results for M119728991


P-1 factor-bounds graph:
B1 = 527000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
277
276
274
273
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