What is the Least Common Multiple of 9920 and 9939?

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 9920 and 9939 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 9920 and 9939, than apply into the LCM equation.

GCF(9920,9939) = 1
LCM(9920,9939) = ( 9920 × 9939) / 1
LCM(9920,9939) = 98594880 / 1
LCM(9920,9939) = 98594880

Least Common Multiple (LCM) of 9920 and 9939 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 9920 and 9939. First we will calculate the prime factors of 9920 and 9939.

Prime Factorization of 9920

Prime Factorization of 9939

Now multiplying the highest exponent prime factors to calculate the LCM of 9920 and 9939.

LCM(9920,9939) = 2⁶ × 5¹ × 31¹ × 3¹ × 3313¹
LCM(9920,9939) = 98594880