check if a number is prime
npm install prime-number> check if a number is prime
Is it 1 a prime?
Some years ago I created a djembe rhythm generated by prime numbers, and it sounds good if 1 is considered prime. However, the algorithm implemented here defines 1 as a not prime.
With npm do
``bash`
npm install prime-number
As you might expect, you can simply do
`js
import isPrime from 'prime-number'
console.log(isPrime(19)) // true
`
You can also use CommonJS.
`js`
const isPrime = require('prime-number')
Clone this repo and install packages for benchmarks with --no-save flag.
`sh`
npm install check-prime is-prime --no-save
Then run benchmark scripts.
Using this prime-number package.
`sh`
npm run benchmark:prime-number
Found 8363 primes
Primality benchmark: 7.064ms
Using is-prime package.
`sh`
npm run benchmark:is-prime
Found 8363 primes
Primality benchmark: 7.045ms
Using check-prime package.
`sh``
npm run benchmark:check-prime
Found 8363 primes
Primality benchmark: 23.785ms