rad

The radical of an integer.

Syntax

• rad(n)

  • n is a positive integer

Description

If n is a positive integer, then rad(n) is the radical of n, defined as the product of all distinct prime factors of n. (The product of all prime factors, taken with multiplicity, would be n itself.)

Hence, rad(n) is the same as

∏(unique(PrimeFactors(n)))

Examples

rad(1024)

2

rad(19871226)

6623742

See also

• PrimeFactors

• IsSquareFree