Pronunciation: /ˈko.praɪm/ Explain

A set of integers are coprime if they have no factors greater than 1 in common. For example, 9 and 10 are coprime. The factors of 9 are 1, 3, and 9. The factors of 10 are 1, 2, 5, and 10. Since 9 and 10 have no factors other than 1 in common, 9 and 10 are coprime. Coprime integers can also be called relatively prime.


  1. McAdams, David E.. All Math Words Dictionary, coprime. 2nd Classroom edition 20150108-4799968. pg 48. Life is a Story Problem LLC. January 8, 2015. Buy the book

Cite this article as:

McAdams, David E. Coprime. 12/21/2018. All Math Words Encyclopedia. Life is a Story Problem LLC.

Revision History

12/21/2018: Reviewed and corrected IPA pronunication. (McAdams, David E.)
6/25/2018: Removed broken links, updated license, implemented new markup, updated GeoGebra apps. (McAdams, David E.)
5/5/2011: Initial version. (McAdams, David E.)

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