What is the Least Common Multiple of 72121 and 72139?

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 72121 and 72139 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 72121 and 72139, than apply into the LCM equation.

GCF(72121,72139) = 1
LCM(72121,72139) = ( 72121 × 72139) / 1
LCM(72121,72139) = 5202736819 / 1
LCM(72121,72139) = 5202736819

Least Common Multiple (LCM) of 72121 and 72139 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 72121 and 72139. First we will calculate the prime factors of 72121 and 72139.

Prime Factorization of 72121

Prime Factorization of 72139

Now multiplying the highest exponent prime factors to calculate the LCM of 72121 and 72139.

LCM(72121,72139) = 7¹ × 10303¹ × 72139¹
LCM(72121,72139) = 5202736819