What is the Least Common Multiple of 72970 and 72985?

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 72970 and 72985 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 72970 and 72985, than apply into the LCM equation.

GCF(72970,72985) = 5
LCM(72970,72985) = ( 72970 × 72985) / 5
LCM(72970,72985) = 5325715450 / 5
LCM(72970,72985) = 1065143090

Least Common Multiple (LCM) of 72970 and 72985 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 72970 and 72985. First we will calculate the prime factors of 72970 and 72985.

Prime Factorization of 72970

Prime Factorization of 72985

Now multiplying the highest exponent prime factors to calculate the LCM of 72970 and 72985.

LCM(72970,72985) = 2¹ × 5¹ × 7297¹ × 11¹ × 1327¹
LCM(72970,72985) = 1065143090