What is the Least Common Multiple of 42985 and 42989?

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 42985 and 42989 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42985 and 42989, than apply into the LCM equation.

GCF(42985,42989) = 1
LCM(42985,42989) = ( 42985 × 42989) / 1
LCM(42985,42989) = 1847882165 / 1
LCM(42985,42989) = 1847882165

Least Common Multiple (LCM) of 42985 and 42989 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42985 and 42989. First we will calculate the prime factors of 42985 and 42989.

Prime Factorization of 42985

Prime Factorization of 42989

Now multiplying the highest exponent prime factors to calculate the LCM of 42985 and 42989.

LCM(42985,42989) = 5¹ × 8597¹ × 42989¹
LCM(42985,42989) = 1847882165