What is the Least Common Multiple of 20972 and 20992?

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 20972 and 20992 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20972 and 20992, than apply into the LCM equation.

GCF(20972,20992) = 4
LCM(20972,20992) = ( 20972 × 20992) / 4
LCM(20972,20992) = 440244224 / 4
LCM(20972,20992) = 110061056

Least Common Multiple (LCM) of 20972 and 20992 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20972 and 20992. First we will calculate the prime factors of 20972 and 20992.

Prime Factorization of 20972

Prime Factorization of 20992

Now multiplying the highest exponent prime factors to calculate the LCM of 20972 and 20992.

LCM(20972,20992) = 2⁹ × 7² × 107¹ × 41¹
LCM(20972,20992) = 110061056