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An earthquake was recorded which was 1584893 times more powerful than a reference level zero earthquake. What is the magnitude of this earthquake on the Richter scale? Intensity on the Richter scale is log(I/Io).

Correct Answer is 6.268. But how to get that?

1 answer

I get log(1584893) = 6.199999 or 6.2
not 6.268