What is the Least Common Multiple of 84160 and 84172?

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 84160 and 84172 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 84160 and 84172, than apply into the LCM equation.

GCF(84160,84172) = 4
LCM(84160,84172) = ( 84160 × 84172) / 4
LCM(84160,84172) = 7083915520 / 4
LCM(84160,84172) = 1770978880

Least Common Multiple (LCM) of 84160 and 84172 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 84160 and 84172. First we will calculate the prime factors of 84160 and 84172.

Prime Factorization of 84160

Prime Factorization of 84172

Now multiplying the highest exponent prime factors to calculate the LCM of 84160 and 84172.

LCM(84160,84172) = 2⁶ × 5¹ × 263¹ × 11¹ × 1913¹
LCM(84160,84172) = 1770978880