eratosthenes-func.js

// Print out all the prime numbers from 1 to 100.
const N = 100

const range = (k) => Array.from(Array(k).keys())

const multiples = (i, max) => range(Math.ceil(max / i - 1)).map((k) => i * (k + 1))

const sieve = range(N)
  .reduce((s, i) => {
    if (i === 0) { s[i] = false }
    if (i === 1) { s[i] = true }
    if (s[i] === undefined) {
      multiples(i, N).forEach((k) => s[k] = false)
      s[i] = true
    }
    return s
  }, Array(N))

sieve.forEach((k, idx) => (k) ? console.log(idx) : '')

eratosthenes-mix.js

// Print out all the prime numbers from 1 to 100.
const N = 100

const range = (k) => Array.from(Array(k).keys())

const multiples = (i, max) => range(Math.ceil(max / i - 1)).map((k) => i * (k + 1))

let sieve = Array(N).fill(true)

sieve[0] = false

for (let i = 2; i < N; i++) {
  if (sieve[i]) {
    multiples(i, N).forEach((k) => sieve[k] = false)
    sieve[i] = true
  }
}

sieve.forEach((k, idx) => (k) ? console.log(idx) : '')

eratosthenes-prag.js

// Print out all the prime numbers from 1 to 100.
const N = 100

let sieve = Array(N).fill(true)

sieve[0] = false

for (let i = 2; i < N; i++) {
  if (sieve[i]) {
    for (let j = i + i; j < N; j += i) {
      sieve[j] = false
    }
  }
}

sieve.forEach((k, idx) => (k) ? console.log(idx) : '')