is 2 178288403 - 1
has 53670158 decimal digits
takes 1,278.353 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
Actual27542.918762.6667 %----42.918762.6667 %
Target278343.356664.1026 %1100000200000000124.10154.0734 %467.458165.5648 %
Difference-3-300.4379-1.4359 %-1100000-200000000-124.1015-4.0734 %-424.5394-2.8981 %

Known prime factors (1 factor, 74.6 bits, 0.00004186% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
178288403293494456354455534934312374.63682308902714905
5 × 584429 × 28167289
2018-10-075844292816728930.49321.70029.800

P-1 results:
No P-1 results for M178288403


Trial Factoring results:
57585960616263646566676869707172737475767778
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-07-19MarzbugWin_7_Box2632640.011
2011-04-23Kevin JagetUnderdog2642650.021
2013-10-14AxelssonManual testing2652660.042
2015-07-15Judge HaleCJ2662670.084
2016-06-27rubikvn2100com_cc170b-072672680.168
2017-05-20tmorrowpaperclip2682690.335
2018-03-24The_MatrixManual testing2692700.671
2018-03-26RichardManual testing2702724.024
2018-10-07EratosthenesManual testing272275
74.636
23
29.74


ECM factoring results:
No ECM results for M178288403


Lucas-Lehmer results:
No L-L results for M178288403


PRP results:
No PRP results for M178288403


CERT results:
No CERT results for M178288403


P-1 factor-bounds graph:
104
105
106
104
105
106
107
108
TF factor-bounds graph:
275
272
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