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What is the Least Common Multiple of 91125 and 91140?

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 91125 and 91140 is 553675500.

LCM(91125,91140) = 553675500

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Least Common Multiple of 91125 and 91140 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 91125 and 91140, than apply into the LCM equation.

GCF(91125,91140) = 15
LCM(91125,91140) = ( 91125 × 91140) / 15
LCM(91125,91140) = 8305132500 / 15
LCM(91125,91140) = 553675500

Least Common Multiple (LCM) of 91125 and 91140 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 91125 and 91140. First we will calculate the prime factors of 91125 and 91140.

Prime Factorization of 91125

Prime factors of 91125 are 3, 5. Prime factorization of 91125 in exponential form is:

91125 = 36 × 53

Prime Factorization of 91140

Prime factors of 91140 are 2, 3, 5, 7, 31. Prime factorization of 91140 in exponential form is:

91140 = 22 × 31 × 51 × 72 × 311

Now multiplying the highest exponent prime factors to calculate the LCM of 91125 and 91140.

LCM(91125,91140) = 36 × 53 × 22 × 72 × 311
LCM(91125,91140) = 553675500