is 2 178497589 - 1
has 53733129 decimal digits
takes 1,388.315 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
Actual27685.737863.1579 %----85.737863.1579 %
Target278342.954364.1026 %1100000200000000134.61864.0739 %477.572865.5650 %
Difference-2-257.2164-0.9447 %-1100000-200000000-134.6186-4.0739 %-391.8350-2.4071 %

Known prime factors (1 factor, 76.4 bits, 0.00004282% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1784975891024811400371271974845032476.440287065894310559
32 × 72 × 13 × 163 × 307193521
2019-04-0816330719352185.738188.76352.54

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2019-04-08jaredvvManual testing2476.4409.0220.000%


Trial Factoring results:
57585960616263646566676869707172737475767778
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-07-19carlos56xp102632640.011
2011-03-15tscsecu2642650.021
2013-04-25Charles A. Morrischandra2652660.042
2015-07-16el groccoManual testing2662670.084
2019-04-13jaredvvManual testing22268
2016-06-25rubikvn2100com_cc196-302672680.167
2017-05-22Andrew BManual testing2682690.335
2019-04-13jaredvvManual testing268269
2018-03-26The_MatrixManual testing2692700.670
2019-04-13jaredvvManual testing269270
2018-04-04The_MatrixManual testing2702711.340
2019-04-13jaredvvManual testing270271
2019-04-05lobsterfordinnerManual testing2712722.679
2019-04-13jaredvvManual testing271272
2019-04-06jaredvvManual testing2722735.359
2019-04-10jaredvvManual testing273274
2019-04-10jaredvvManual testing274275
2019-04-10jaredvvManual testing275276


ECM factoring results:
No ECM results for M178497589


Lucas-Lehmer results:
No L-L results for M178497589


PRP results:
No PRP results for M178497589


CERT results:
No CERT results for M178497589


P-1 factor-bounds graph:
101
102
103
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
276
275
274
273
272
271
270
269
268
267
266
265
264
this exponent TF target: 78
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00