What is the Least Common Multiple of 71620 and 71636?

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 71620 and 71636 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 71620 and 71636, than apply into the LCM equation.

GCF(71620,71636) = 4
LCM(71620,71636) = ( 71620 × 71636) / 4
LCM(71620,71636) = 5130570320 / 4
LCM(71620,71636) = 1282642580

Least Common Multiple (LCM) of 71620 and 71636 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 71620 and 71636. First we will calculate the prime factors of 71620 and 71636.

Prime Factorization of 71620

Prime Factorization of 71636

Now multiplying the highest exponent prime factors to calculate the LCM of 71620 and 71636.

LCM(71620,71636) = 2² × 5¹ × 3581¹ × 17909¹
LCM(71620,71636) = 1282642580