Log Base 5 of 125

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What is log₅ 125?

Answer

log5 125 =
3

log5 is the log base 5.

log5 125 is the power you raise 5 to, to get 125: 5y = 125.

5³ = 125 ✓

Oxy

Answer point (125, 3), beyond the drawing (the arrow points to it).

The curve y = log5 x passes through (1, 0) and (5, 1) and rises: for x > 1 the log is positive, for 0 < x < 1 negative.

Log of 125 in different bases
BaseNotationValue
eln 125≈ 4.8283
10log 125≈ 2.0969
2log₂ 125≈ 6.9658
5log₅ 1253

See Also

Log base 5 of nearby numbers

FAQ

What is log₅ 125?

log₅ 125 = 3

How to find log₅ 125 without a calculator?

Write 125 as a power of 5: 125 = 5³. The exponent is the answer: log₅ 125 = 3.

What does log without a base mean?

At school and on a calculator, log x without a base is the common log, base 10: log 100 = 2. In Python, math.log(x) is the natural log ln x; in Excel, LN is the natural log and LOG is base 10.