What is the Least Common Multiple of 86620 and 86638?

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 86620 and 86638 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 86620 and 86638, than apply into the LCM equation.

GCF(86620,86638) = 2
LCM(86620,86638) = ( 86620 × 86638) / 2
LCM(86620,86638) = 7504583560 / 2
LCM(86620,86638) = 3752291780

Least Common Multiple (LCM) of 86620 and 86638 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 86620 and 86638. First we will calculate the prime factors of 86620 and 86638.

Prime Factorization of 86620

Prime Factorization of 86638

Now multiplying the highest exponent prime factors to calculate the LCM of 86620 and 86638.

LCM(86620,86638) = 2² × 5¹ × 61¹ × 71¹ × 43319¹
LCM(86620,86638) = 3752291780