What is the Least Common Multiple of 86420 and 86438?

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 86420 and 86438 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 86420 and 86438, than apply into the LCM equation.

GCF(86420,86438) = 2
LCM(86420,86438) = ( 86420 × 86438) / 2
LCM(86420,86438) = 7469971960 / 2
LCM(86420,86438) = 3734985980

Least Common Multiple (LCM) of 86420 and 86438 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 86420 and 86438. First we will calculate the prime factors of 86420 and 86438.

Prime Factorization of 86420

Prime Factorization of 86438

Now multiplying the highest exponent prime factors to calculate the LCM of 86420 and 86438.

LCM(86420,86438) = 2² × 5¹ × 29¹ × 149¹ × 11¹ × 3929¹
LCM(86420,86438) = 3734985980