Eddie Caraballo added the comment:
Issue seems to be with all power of 3 divisible by 5 (3**5, 3**10, etc).
Powers of 7 also seem to have the issue, where math.log(7**5, 7) = 5.01
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Python tracker
<https://bugs.python.org/issue45
New submission from Eddie Caraballo :
math.log(243, 3) should result in 5.0, but instead results in 4....
Can be worked around via base conversion (math.log10(243) / math.log10(3))
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components: Library (Lib)
messages: 403065
nosy: eddiemichaelc
priority: normal
severity: normal
