is_prime

Test whether a vector of numbers is prime or composite.

Fast functions for dealing with prime numbers, such as testing
whether a number is prime and generating a sequence prime numbers.
Additional functions include finding prime factors and Ruth-Aaron pairs,
finding next and previous prime numbers in the series, finding or estimating
the nth prime, estimating the number of primes less than or equal to an
arbitrary number, computing primorials, prime k-tuples (e.g., twin primes),
finding the greatest common divisor and smallest (least) common multiple,
testing whether two numbers are coprime, and computing Euler's totient
function. Most functions are vectorized for speed and convenience.

Oliver Keyes

primes

Fast Functions for Prime Numbers

Os Keyes

Paul Egeler

is_prime function

<dl><dt>x</dt>
<dd>an integer vector containing elements to be tested for primality.</dd></dl>

Arguments

Author

Test for Prime Numbers — is_prime

<dl>

<dt>x</dt>
<dd>an integer vector containing elements to be tested for primality.</dd>

</dl>

is_prime: Test for Prime Numbers

Description

Usage

Value

Arguments

Author

Examples