What is the Least Common Multiple of 70989 and 71009?

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 70989 and 71009 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 70989 and 71009, than apply into the LCM equation.

GCF(70989,71009) = 1
LCM(70989,71009) = ( 70989 × 71009) / 1
LCM(70989,71009) = 5040857901 / 1
LCM(70989,71009) = 5040857901

Least Common Multiple (LCM) of 70989 and 71009 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 70989 and 71009. First we will calculate the prime factors of 70989 and 71009.

Prime Factorization of 70989

Prime Factorization of 71009

Now multiplying the highest exponent prime factors to calculate the LCM of 70989 and 71009.

LCM(70989,71009) = 3¹ × 23663¹ × 17¹ × 4177¹
LCM(70989,71009) = 5040857901