What is the Least Common Multiple of 9681 and 9690?

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 9681 and 9690 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 9681 and 9690, than apply into the LCM equation.

GCF(9681,9690) = 3
LCM(9681,9690) = ( 9681 × 9690) / 3
LCM(9681,9690) = 93808890 / 3
LCM(9681,9690) = 31269630

Least Common Multiple (LCM) of 9681 and 9690 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 9681 and 9690. First we will calculate the prime factors of 9681 and 9690.

Prime Factorization of 9681

Prime Factorization of 9690

Now multiplying the highest exponent prime factors to calculate the LCM of 9681 and 9690.

LCM(9681,9690) = 3¹ × 7¹ × 461¹ × 2¹ × 5¹ × 17¹ × 19¹
LCM(9681,9690) = 31269630