What is the Least Common Multiple of 82208 and 82220?

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 82208 and 82220 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 82208 and 82220, than apply into the LCM equation.

GCF(82208,82220) = 4
LCM(82208,82220) = ( 82208 × 82220) / 4
LCM(82208,82220) = 6759141760 / 4
LCM(82208,82220) = 1689785440

Least Common Multiple (LCM) of 82208 and 82220 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 82208 and 82220. First we will calculate the prime factors of 82208 and 82220.

Prime Factorization of 82208

Prime Factorization of 82220

Now multiplying the highest exponent prime factors to calculate the LCM of 82208 and 82220.

LCM(82208,82220) = 2⁵ × 7¹ × 367¹ × 5¹ × 4111¹
LCM(82208,82220) = 1689785440