91

Also known as ninety one, ninety-one

nombre entier naturel

AI overview

91 is a natural number that comes after 90 and before 92. It's notable because despite appearing to be prime at first glance, it's actually composite—equal to 7 multiplied by 13—making it a classic example used to illustrate that not all odd numbers are prime.

AI-generated from the Wikipedia summary — may contain errors.

In the Vinony graph

Vinony's link graph records 437 inbound references to 91, and connects out to natural number, prime number and integer.

It is catalogued under the topic Integers.

Vinony links it to 74 Wikipedia language editions.

Wikidata facts

Instance of: cabtaxi number

Show 6 more facts

code: 133
maintained by WikiProject: WikiProject Mathematics
Commons category: 91 (number)
numeric value: 91
prime factor: 13
number of decimal digits: 2

via Wikidata · CC0

Article · Français

Le nombre 91 (nonante-et-un ou quatre-vingt-onze) est l'entier naturel qui suit 90 et qui précède 92. La forme sans traits d'union nonante et un est également reconnue.

Abstract from DBpedia / Wikipedia · CC BY-SA