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What is the Least Common Multiple of 1169 and 1185?

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 1169 and 1185 is 1385265.

LCM(1169,1185) = 1385265

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Least Common Multiple of 1169 and 1185 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1169 and 1185, than apply into the LCM equation.

GCF(1169,1185) = 1
LCM(1169,1185) = ( 1169 × 1185) / 1
LCM(1169,1185) = 1385265 / 1
LCM(1169,1185) = 1385265

Least Common Multiple (LCM) of 1169 and 1185 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1169 and 1185. First we will calculate the prime factors of 1169 and 1185.

Prime Factorization of 1169

Prime factors of 1169 are 7, 167. Prime factorization of 1169 in exponential form is:

1169 = 71 × 1671

Prime Factorization of 1185

Prime factors of 1185 are 3, 5, 79. Prime factorization of 1185 in exponential form is:

1185 = 31 × 51 × 791

Now multiplying the highest exponent prime factors to calculate the LCM of 1169 and 1185.

LCM(1169,1185) = 71 × 1671 × 31 × 51 × 791
LCM(1169,1185) = 1385265