What is the Least Common Multiple of 69920 and 69928?

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 69920 and 69928 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 69920 and 69928, than apply into the LCM equation.

GCF(69920,69928) = 8
LCM(69920,69928) = ( 69920 × 69928) / 8
LCM(69920,69928) = 4889365760 / 8
LCM(69920,69928) = 611170720

Least Common Multiple (LCM) of 69920 and 69928 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 69920 and 69928. First we will calculate the prime factors of 69920 and 69928.

Prime Factorization of 69920

Prime Factorization of 69928

Now multiplying the highest exponent prime factors to calculate the LCM of 69920 and 69928.

LCM(69920,69928) = 2⁵ × 5¹ × 19¹ × 23¹ × 8741¹
LCM(69920,69928) = 611170720