What is the Least Common Multiple of 67220 and 67228?

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 67220 and 67228 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 67220 and 67228, than apply into the LCM equation.

GCF(67220,67228) = 4
LCM(67220,67228) = ( 67220 × 67228) / 4
LCM(67220,67228) = 4519066160 / 4
LCM(67220,67228) = 1129766540

Least Common Multiple (LCM) of 67220 and 67228 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 67220 and 67228. First we will calculate the prime factors of 67220 and 67228.

Prime Factorization of 67220

Prime Factorization of 67228

Now multiplying the highest exponent prime factors to calculate the LCM of 67220 and 67228.

LCM(67220,67228) = 2² × 5¹ × 3361¹ × 7⁵
LCM(67220,67228) = 1129766540