Let $B$ be a positive integer. A positive integer $n$ is said to be $B$-smooth if all the prime factors dividing $n$ are less than $B$. I was wondering about the etymology of this term. Why is such number called "smooth"?
2026-02-22 21:28:15.1771795695
etymology of smoothness
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The obvious metaphor is smooth $=$ fine-grained.