# What is the Least Common Multiple of 67 and 87?

*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 (LCM) of 67 and 87 is **5829**.

LCM(67,87) = 5829

## Least Common Multiple of 67 and 87 with GCF Formula

The formula of **LCM** is LCM(a,b) = ( a × b) / GCF(a,b).

We need to calculate greatest common factor 67 and 87, than apply into the LCM equation.

GCF(67,87) = 1

LCM(67,87) = ( 67 × 87) / 1

LCM(67,87) = 5829 / 1

LCM(67,87) = 5829

## Least Common Multiple (LCM) of 67 and 87 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 67 and 87. First we will calculate the **prime factors of 67 and 87**.

### Prime Factorization of 67

Prime factors of 67 are 67. Prime factorization of **67** in exponential form is:

67 = 67^{1}

### Prime Factorization of 87

Prime factors of 87 are 3, 29. Prime factorization of **87** in exponential form is:

87 = 3^{1} × 29^{1}

Now multiplying the highest exponent prime factors to calculate the **LCM of 67 and 87**.

LCM(67,87) = 67^{1} × 3^{1} × 29^{1}

LCM(67,87) = 5829