minPrimeFactor

Find the least prime number which divides a number.

Similar: minPrimeFactor, maxPrimeFactor, primeFactors.

function minPrimeFactor(x)
// x: a number

const xnumber = require('extra-number');


xnumber.minPrimeFactor(1);
// → 0

xnumber.minPrimeFactor(3);
// → 3

xnumber.minPrimeFactor(21);
// → 3

xnumber.minPrimeFactor(55);
// → 5

xnumber.minPrimeFactor(53);
// → 53

References

• Least Prime Factor: Wolfram MathWorld