What is the Least Common Multiple of 87681 and 87690?

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 87681 and 87690 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 87681 and 87690, than apply into the LCM equation.

GCF(87681,87690) = 3
LCM(87681,87690) = ( 87681 × 87690) / 3
LCM(87681,87690) = 7688746890 / 3
LCM(87681,87690) = 2562915630

Least Common Multiple (LCM) of 87681 and 87690 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 87681 and 87690. First we will calculate the prime factors of 87681 and 87690.

Prime Factorization of 87681

Prime Factorization of 87690

Now multiplying the highest exponent prime factors to calculate the LCM of 87681 and 87690.

LCM(87681,87690) = 3¹ × 11¹ × 2657¹ × 2¹ × 5¹ × 37¹ × 79¹
LCM(87681,87690) = 2562915630