What is the Least Common Multiple of 84420 and 84434?

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 84420 and 84434 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 84420 and 84434, than apply into the LCM equation.

GCF(84420,84434) = 14
LCM(84420,84434) = ( 84420 × 84434) / 14
LCM(84420,84434) = 7127918280 / 14
LCM(84420,84434) = 509137020

Least Common Multiple (LCM) of 84420 and 84434 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 84420 and 84434. First we will calculate the prime factors of 84420 and 84434.

Prime Factorization of 84420

Prime Factorization of 84434

Now multiplying the highest exponent prime factors to calculate the LCM of 84420 and 84434.

LCM(84420,84434) = 2² × 3² × 5¹ × 7¹ × 67¹ × 37¹ × 163¹
LCM(84420,84434) = 509137020