What is the Least Common Multiple of 81140 and 81146?

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 81140 and 81146 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 81140 and 81146, than apply into the LCM equation.

GCF(81140,81146) = 2
LCM(81140,81146) = ( 81140 × 81146) / 2
LCM(81140,81146) = 6584186440 / 2
LCM(81140,81146) = 3292093220

Least Common Multiple (LCM) of 81140 and 81146 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 81140 and 81146. First we will calculate the prime factors of 81140 and 81146.

Prime Factorization of 81140

Prime Factorization of 81146

Now multiplying the highest exponent prime factors to calculate the LCM of 81140 and 81146.

LCM(81140,81146) = 2² × 5¹ × 4057¹ × 13¹ × 3121¹
LCM(81140,81146) = 3292093220