What is the Least Common Multiple of 68940 and 68960?

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 68940 and 68960 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 68940 and 68960, than apply into the LCM equation.

GCF(68940,68960) = 20
LCM(68940,68960) = ( 68940 × 68960) / 20
LCM(68940,68960) = 4754102400 / 20
LCM(68940,68960) = 237705120

Least Common Multiple (LCM) of 68940 and 68960 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 68940 and 68960. First we will calculate the prime factors of 68940 and 68960.

Prime Factorization of 68940

Prime Factorization of 68960

Now multiplying the highest exponent prime factors to calculate the LCM of 68940 and 68960.

LCM(68940,68960) = 2⁵ × 3² × 5¹ × 383¹ × 431¹
LCM(68940,68960) = 237705120