What is the Least Common Multiple of 42956 and 42970?

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 42956 and 42970 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42956 and 42970, than apply into the LCM equation.

GCF(42956,42970) = 2
LCM(42956,42970) = ( 42956 × 42970) / 2
LCM(42956,42970) = 1845819320 / 2
LCM(42956,42970) = 922909660

Least Common Multiple (LCM) of 42956 and 42970 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42956 and 42970. First we will calculate the prime factors of 42956 and 42970.

Prime Factorization of 42956

Prime Factorization of 42970

Now multiplying the highest exponent prime factors to calculate the LCM of 42956 and 42970.

LCM(42956,42970) = 2² × 10739¹ × 5¹ × 4297¹
LCM(42956,42970) = 922909660