next_prime

prev_prime

Find the next prime numbers or previous prime numbers over a vector.

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

next_prime function

<dl><dt>x</dt>
<dd>a vector of integers from which to start the search.</dd></dl>

Arguments

Author

Find the Next and Previous Prime Numbers — next_prime

<dl>

<dt>x</dt>
<dd>a vector of integers from which to start the search.</dd>

</dl>

next_prime: Find the Next and Previous Prime Numbers

Description

Usage

Value

Arguments

Author

Details

Examples