What is the Least Common Multiple of 70420 and 70432?

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 70420 and 70432 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 70420 and 70432, than apply into the LCM equation.

GCF(70420,70432) = 4
LCM(70420,70432) = ( 70420 × 70432) / 4
LCM(70420,70432) = 4959821440 / 4
LCM(70420,70432) = 1239955360

Least Common Multiple (LCM) of 70420 and 70432 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 70420 and 70432. First we will calculate the prime factors of 70420 and 70432.

Prime Factorization of 70420

Prime Factorization of 70432

Now multiplying the highest exponent prime factors to calculate the LCM of 70420 and 70432.

LCM(70420,70432) = 2⁵ × 5¹ × 7¹ × 503¹ × 31¹ × 71¹
LCM(70420,70432) = 1239955360