What is the Least Common Multiple of 63990 and 63998?

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 63990 and 63998 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 63990 and 63998, than apply into the LCM equation.

GCF(63990,63998) = 2
LCM(63990,63998) = ( 63990 × 63998) / 2
LCM(63990,63998) = 4095232020 / 2
LCM(63990,63998) = 2047616010

Least Common Multiple (LCM) of 63990 and 63998 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 63990 and 63998. First we will calculate the prime factors of 63990 and 63998.

Prime Factorization of 63990

Prime Factorization of 63998

Now multiplying the highest exponent prime factors to calculate the LCM of 63990 and 63998.

LCM(63990,63998) = 2¹ × 3⁴ × 5¹ × 79¹ × 11¹ × 2909¹
LCM(63990,63998) = 2047616010