prime number

The definition of a prime number is a number that can only be evenly divided by 1 and itself.

(noun)

An example of a prime number is the number 13, since it is evenly divisible only by 1 and 13.

See prime number in Webster's New World College Dictionary

an integer that can be evenly divided by no other whole number than itself or 1, as 2, 3, 5, or 7

See prime number in American Heritage Dictionary 4

noun

A positive integer not divisible without a remainder by any positive integer other than itself and one.

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