What is the Least Common Multiple of 68160 and 68172?

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 68160 and 68172 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 68160 and 68172, than apply into the LCM equation.

GCF(68160,68172) = 12
LCM(68160,68172) = ( 68160 × 68172) / 12
LCM(68160,68172) = 4646603520 / 12
LCM(68160,68172) = 387216960

Least Common Multiple (LCM) of 68160 and 68172 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 68160 and 68172. First we will calculate the prime factors of 68160 and 68172.

Prime Factorization of 68160

Prime Factorization of 68172

Now multiplying the highest exponent prime factors to calculate the LCM of 68160 and 68172.

LCM(68160,68172) = 2⁶ × 3¹ × 5¹ × 71¹ × 13¹ × 19¹ × 23¹
LCM(68160,68172) = 387216960