What is the Least Common Multiple of 42920 and 42928?

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 42920 and 42928 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42920 and 42928, than apply into the LCM equation.

GCF(42920,42928) = 8
LCM(42920,42928) = ( 42920 × 42928) / 8
LCM(42920,42928) = 1842469760 / 8
LCM(42920,42928) = 230308720

Least Common Multiple (LCM) of 42920 and 42928 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42920 and 42928. First we will calculate the prime factors of 42920 and 42928.

Prime Factorization of 42920

Prime Factorization of 42928

Now multiplying the highest exponent prime factors to calculate the LCM of 42920 and 42928.

LCM(42920,42928) = 2⁴ × 5¹ × 29¹ × 37¹ × 2683¹
LCM(42920,42928) = 230308720