What is the Least Common Multiple of 31009 and 31020?

Least common multiple or lowest common denominator (lcd) can be calculated in two way; with the LCM formula calculation of greatest common factor (GCF), or multiplying the prime factors with the highest exponent factor.

Least Common Multiple of 31009 and 31020 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31009 and 31020, than apply into the LCM equation.

GCF(31009,31020) = 11
LCM(31009,31020) = ( 31009 × 31020) / 11
LCM(31009,31020) = 961899180 / 11
LCM(31009,31020) = 87445380

Least Common Multiple (LCM) of 31009 and 31020 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31009 and 31020. First we will calculate the prime factors of 31009 and 31020.

Prime Factorization of 31009

Prime Factorization of 31020

Now multiplying the highest exponent prime factors to calculate the LCM of 31009 and 31020.

LCM(31009,31020) = 11¹ × 2819¹ × 2² × 3¹ × 5¹ × 47¹
LCM(31009,31020) = 87445380