# What is the Least Common Multiple of 155 and 166?

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 155 and 166 is 25730.

LCM(155,166) = 25730

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## Least Common Multiple of 155 and 166 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 155 and 166, than apply into the LCM equation.

GCF(155,166) = 1
LCM(155,166) = ( 155 × 166) / 1
LCM(155,166) = 25730 / 1
LCM(155,166) = 25730

## Least Common Multiple (LCM) of 155 and 166 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 155 and 166. First we will calculate the prime factors of 155 and 166.

### Prime Factorization of 155

Prime factors of 155 are 5, 31. Prime factorization of 155 in exponential form is:

155 = 51 × 311

### Prime Factorization of 166

Prime factors of 166 are 2, 83. Prime factorization of 166 in exponential form is:

166 = 21 × 831

Now multiplying the highest exponent prime factors to calculate the LCM of 155 and 166.

LCM(155,166) = 51 × 311 × 21 × 831
LCM(155,166) = 25730