Sphenic number

Rarity: Uncommon

A topic a little better known than average, read and translated beyond its own country.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

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Notion

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Science and technology

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What Wikipedia says

In number theory, a sphenic number (from Ancient Greek: σφήν, 'wedge') is a positive integer that is the product of three distinct prime numbers. For example, since 2, 3, and 73 are all prime, 438 is a sphenic number because 2  ×  3  ×  73 = 438.

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

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