The best replacement for logarithms is algorithms.

The best alternatives to logarithms are rated as following:
★★★★★  algorithms
★★★  natural logarithms
★★  exponents
★★  logarithms
★  common logarithms

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Speaking about logarithms, one probably shouldn't forget about coefficients.

Other search terms related to logarithms and their ratings are:
★★★★★ coefficients
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logarithms
algorithms
natural logarithms