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What is the Least Common Multiple of 2155 and 2175?

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 2155 and 2175 is 937425.

LCM(2155,2175) = 937425

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Least Common Multiple of 2155 and 2175 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2155 and 2175, than apply into the LCM equation.

GCF(2155,2175) = 5
LCM(2155,2175) = ( 2155 × 2175) / 5
LCM(2155,2175) = 4687125 / 5
LCM(2155,2175) = 937425

Least Common Multiple (LCM) of 2155 and 2175 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 2155 and 2175. First we will calculate the prime factors of 2155 and 2175.

Prime Factorization of 2155

Prime factors of 2155 are 5, 431. Prime factorization of 2155 in exponential form is:

2155 = 51 × 4311

Prime Factorization of 2175

Prime factors of 2175 are 3, 5, 29. Prime factorization of 2175 in exponential form is:

2175 = 31 × 52 × 291

Now multiplying the highest exponent prime factors to calculate the LCM of 2155 and 2175.

LCM(2155,2175) = 52 × 4311 × 31 × 291
LCM(2155,2175) = 937425