What is the Least Common Multiple of 42100 and 42120?

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 42100 and 42120 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42100 and 42120, than apply into the LCM equation.

GCF(42100,42120) = 20
LCM(42100,42120) = ( 42100 × 42120) / 20
LCM(42100,42120) = 1773252000 / 20
LCM(42100,42120) = 88662600

Least Common Multiple (LCM) of 42100 and 42120 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42100 and 42120. First we will calculate the prime factors of 42100 and 42120.

Prime Factorization of 42100

Prime Factorization of 42120

Now multiplying the highest exponent prime factors to calculate the LCM of 42100 and 42120.

LCM(42100,42120) = 2³ × 5² × 421¹ × 3⁴ × 13¹
LCM(42100,42120) = 88662600