What is the Least Common Multiple of 91220 and 91228?

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 91220 and 91228 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 91220 and 91228, than apply into the LCM equation.

GCF(91220,91228) = 4
LCM(91220,91228) = ( 91220 × 91228) / 4
LCM(91220,91228) = 8321818160 / 4
LCM(91220,91228) = 2080454540

Least Common Multiple (LCM) of 91220 and 91228 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 91220 and 91228. First we will calculate the prime factors of 91220 and 91228.

Prime Factorization of 91220

Prime Factorization of 91228

Now multiplying the highest exponent prime factors to calculate the LCM of 91220 and 91228.

LCM(91220,91228) = 2² × 5¹ × 4561¹ × 22807¹
LCM(91220,91228) = 2080454540