Largest known prime 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.

At a glance

Class

Notion

Domain

Science and technology

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What Wikipedia says

The largest known prime number as of October 2026 is 2136,279,841 − 1, a number that has 41,024,320 digits when written in the decimal system.

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

Image: Chiph588, CC BY-SA 3.0, via Wikimedia Commons.