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What is the Least Common Multiple of 28203 and 28217?

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 28203 and 28217 is 113686293.

LCM(28203,28217) = 113686293

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Least Common Multiple of 28203 and 28217 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 28203 and 28217, than apply into the LCM equation.

GCF(28203,28217) = 7
LCM(28203,28217) = ( 28203 × 28217) / 7
LCM(28203,28217) = 795804051 / 7
LCM(28203,28217) = 113686293

Least Common Multiple (LCM) of 28203 and 28217 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 28203 and 28217. First we will calculate the prime factors of 28203 and 28217.

Prime Factorization of 28203

Prime factors of 28203 are 3, 7, 17, 79. Prime factorization of 28203 in exponential form is:

28203 = 31 × 71 × 171 × 791

Prime Factorization of 28217

Prime factors of 28217 are 7, 29, 139. Prime factorization of 28217 in exponential form is:

28217 = 71 × 291 × 1391

Now multiplying the highest exponent prime factors to calculate the LCM of 28203 and 28217.

LCM(28203,28217) = 31 × 71 × 171 × 791 × 291 × 1391
LCM(28203,28217) = 113686293