What is the Least Common Multiple of 87561 and 87570?

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 87561 and 87570 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 87561 and 87570, than apply into the LCM equation.

GCF(87561,87570) = 9
LCM(87561,87570) = ( 87561 × 87570) / 9
LCM(87561,87570) = 7667716770 / 9
LCM(87561,87570) = 851968530

Least Common Multiple (LCM) of 87561 and 87570 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 87561 and 87570. First we will calculate the prime factors of 87561 and 87570.

Prime Factorization of 87561

Prime Factorization of 87570

Now multiplying the highest exponent prime factors to calculate the LCM of 87561 and 87570.

LCM(87561,87570) = 3⁴ × 23¹ × 47¹ × 2¹ × 5¹ × 7¹ × 139¹
LCM(87561,87570) = 851968530