primes: MATLAB primes function
In matlab: 'MATLAB' Emulation Package

primes

R Documentation

MATLAB primes function

Description

Generate a list of prime numbers.

Usage

primes(n)

Arguments

`n`	scalar numeric specifying largest prime number desired.

Details

Generates the list of prime numbers less than or equal to n using a variant of the basic "Sieve of Eratosthenes" algorithm. This approach is reasonably fast, but requires a copious amount of memory when n is large. A prime number is one that has no other factors other than 1 and itself.

Value

Returns numeric vector containing prime numbers less than or equal to argument n.

Author(s)

H. Borchers hwborchers@googlemail.com, P. Roebuck proebuck1701@gmail.com

Examples

primes(1000)
length(primes(1e6))    #   78498 prime numbers less than one million
## Not run: 
  length(primes(1e7))  #  664579 prime numbers less than ten million
  length(primes(1e8))  # 5761455 prime numbers less than one hundred million

## End(Not run)

matlab documentation built on June 2, 2022, 1:09 a.m.