What is the Least Common Multiple of 72170 and 72181?

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 72170 and 72181 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 72170 and 72181, than apply into the LCM equation.

GCF(72170,72181) = 1
LCM(72170,72181) = ( 72170 × 72181) / 1
LCM(72170,72181) = 5209302770 / 1
LCM(72170,72181) = 5209302770

Least Common Multiple (LCM) of 72170 and 72181 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 72170 and 72181. First we will calculate the prime factors of 72170 and 72181.

Prime Factorization of 72170

Prime Factorization of 72181

Now multiplying the highest exponent prime factors to calculate the LCM of 72170 and 72181.

LCM(72170,72181) = 2¹ × 5¹ × 7¹ × 1031¹ × 19¹ × 29¹ × 131¹
LCM(72170,72181) = 5209302770