What is the Least Common Multiple of 71616 and 71620?

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 71616 and 71620 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 71616 and 71620, than apply into the LCM equation.

GCF(71616,71620) = 4
LCM(71616,71620) = ( 71616 × 71620) / 4
LCM(71616,71620) = 5129137920 / 4
LCM(71616,71620) = 1282284480

Least Common Multiple (LCM) of 71616 and 71620 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 71616 and 71620. First we will calculate the prime factors of 71616 and 71620.

Prime Factorization of 71616

Prime Factorization of 71620

Now multiplying the highest exponent prime factors to calculate the LCM of 71616 and 71620.

LCM(71616,71620) = 2⁶ × 3¹ × 373¹ × 5¹ × 3581¹
LCM(71616,71620) = 1282284480