# prime numbers

## prime number

noun Mathematics.
a positive integer that is not divisible without remainder by any integer except itself and 1, with 1 often excluded: The integers 2, 3, 5, and 7 are prime numbers.
Also called

Origin:
1585–95

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World English Dictionary
 prime number —n Compare composite number Sometimes shortened to: prime an integer that cannot be factorized into other integers but is only divisible by itself or 1, such as 2, 3, 5, 7, and 11

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American Heritage
Science Dictionary
 prime number   A positive integer greater than 1 that can only be divided by itself and 1 without leaving a remainder. Examples of prime numbers are 7, 23, and 67. Compare composite number.
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American Heritage
Cultural Dictionary

### prime number definition

A number that cannot be divided evenly by any other number except itself and the number one; 1, 3, 5, 7, and 11 are prime numbers.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
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