What is the Least Common Multiple of 68440 and 68458?

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 68440 and 68458 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 68440 and 68458, than apply into the LCM equation.

GCF(68440,68458) = 2
LCM(68440,68458) = ( 68440 × 68458) / 2
LCM(68440,68458) = 4685265520 / 2
LCM(68440,68458) = 2342632760

Least Common Multiple (LCM) of 68440 and 68458 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 68440 and 68458. First we will calculate the prime factors of 68440 and 68458.

Prime Factorization of 68440

Prime Factorization of 68458

Now multiplying the highest exponent prime factors to calculate the LCM of 68440 and 68458.

LCM(68440,68458) = 2³ × 5¹ × 29¹ × 59¹ × 13¹ × 2633¹
LCM(68440,68458) = 2342632760