Campus Livre
nthprime
The n-th prime number.
Category: Mathematics > Number Theory
Syntax
p = nthprime(n)Returns the n-th prime, so nthprime(1) is 2.
Description
The primes are counted from 2: 2, 3, 5, 7, 11, ... For large n the answer is close to n*log(n). It is the inverse of the prime counting function.
Input arguments
n- Positive integer scalar or array.
Output arguments
p- Primes with the size of
n.
Example
First primes and a larger one
nthprime(1:5)
nthprime(100)
nthprime(1000)Output
ans = 1×5
2 3 5 7 11
ans = 541
ans = 7919