CODE EXAMPLE FOR JAVASCRIPT

smallest common multiple javascript

const gcd = (a, b) => b == 0 ? a : gcd (b, a % b)
const lcm = (a, b) =>  a / gcd (a, b) * b
const lcmAll = (ns) => ns .reduce (lcm, 1)
const rng = (lo, hi) => [...Array (hi - lo + 1)] .map ((_, i) => lo + i)

const lcmRng = (lo, hi) => lcmAll (rng (lo, hi))

console .log (lcmRng (1, 13))
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