What is the Least Common Multiple of 40960 and 40972?

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 40960 and 40972 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 40960 and 40972, than apply into the LCM equation.

GCF(40960,40972) = 4
LCM(40960,40972) = ( 40960 × 40972) / 4
LCM(40960,40972) = 1678213120 / 4
LCM(40960,40972) = 419553280

Least Common Multiple (LCM) of 40960 and 40972 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 40960 and 40972. First we will calculate the prime factors of 40960 and 40972.

Prime Factorization of 40960

Prime Factorization of 40972

Now multiplying the highest exponent prime factors to calculate the LCM of 40960 and 40972.

LCM(40960,40972) = 2¹³ × 5¹ × 10243¹
LCM(40960,40972) = 419553280