Powerful number

Rarity: Common

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Notion

Domain

Science and technology

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What Wikipedia says

A powerful number is a positive integer m such that for every prime number p dividing m, p2 also divides m. Equivalently, a powerful number is the product of a square and a cube, that is, a number m of the form m = a2b3, where a and b are positive integers.

Excerpt from the Wikipedia article “Powerful number”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Cmglee, CC BY-SA 4.0, via Wikimedia Commons.