What is the Least Common Multiple of 91420 and 91436?

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 91420 and 91436 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 91420 and 91436, than apply into the LCM equation.

GCF(91420,91436) = 4
LCM(91420,91436) = ( 91420 × 91436) / 4
LCM(91420,91436) = 8359079120 / 4
LCM(91420,91436) = 2089769780

Least Common Multiple (LCM) of 91420 and 91436 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 91420 and 91436. First we will calculate the prime factors of 91420 and 91436.

Prime Factorization of 91420

Prime Factorization of 91436

Now multiplying the highest exponent prime factors to calculate the LCM of 91420 and 91436.

LCM(91420,91436) = 2² × 5¹ × 7¹ × 653¹ × 22859¹
LCM(91420,91436) = 2089769780