What is the Least Common Multiple of 87680 and 87689?

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 87680 and 87689 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 87680 and 87689, than apply into the LCM equation.

GCF(87680,87689) = 1
LCM(87680,87689) = ( 87680 × 87689) / 1
LCM(87680,87689) = 7688571520 / 1
LCM(87680,87689) = 7688571520

Least Common Multiple (LCM) of 87680 and 87689 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 87680 and 87689. First we will calculate the prime factors of 87680 and 87689.

Prime Factorization of 87680

Prime Factorization of 87689

Now multiplying the highest exponent prime factors to calculate the LCM of 87680 and 87689.

LCM(87680,87689) = 2⁷ × 5¹ × 137¹ × 7¹ × 12527¹
LCM(87680,87689) = 7688571520