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What is the Least Common Multiple of 2143 and 2155?

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 2143 and 2155 is 4618165.

LCM(2143,2155) = 4618165

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Least Common Multiple of 2143 and 2155 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2143 and 2155, than apply into the LCM equation.

GCF(2143,2155) = 1
LCM(2143,2155) = ( 2143 × 2155) / 1
LCM(2143,2155) = 4618165 / 1
LCM(2143,2155) = 4618165

Least Common Multiple (LCM) of 2143 and 2155 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 2143 and 2155. First we will calculate the prime factors of 2143 and 2155.

Prime Factorization of 2143

Prime factors of 2143 are 2143. Prime factorization of 2143 in exponential form is:

2143 = 21431

Prime Factorization of 2155

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

2155 = 51 × 4311

Now multiplying the highest exponent prime factors to calculate the LCM of 2143 and 2155.

LCM(2143,2155) = 21431 × 51 × 4311
LCM(2143,2155) = 4618165