What is the Least Common Multiple of 67561 and 67578?

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 67561 and 67578 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 67561 and 67578, than apply into the LCM equation.

GCF(67561,67578) = 1
LCM(67561,67578) = ( 67561 × 67578) / 1
LCM(67561,67578) = 4565637258 / 1
LCM(67561,67578) = 4565637258

Least Common Multiple (LCM) of 67561 and 67578 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 67561 and 67578. First we will calculate the prime factors of 67561 and 67578.

Prime Factorization of 67561

Prime Factorization of 67578

Now multiplying the highest exponent prime factors to calculate the LCM of 67561 and 67578.

LCM(67561,67578) = 13¹ × 5197¹ × 2¹ × 3¹ × 7¹ × 1609¹
LCM(67561,67578) = 4565637258