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What is the Least Common Multiple of 291 and 297?

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 291 and 297 is 28809.

LCM(291,297) = 28809

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Least Common Multiple of 291 and 297 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 291 and 297, than apply into the LCM equation.

GCF(291,297) = 3
LCM(291,297) = ( 291 × 297) / 3
LCM(291,297) = 86427 / 3
LCM(291,297) = 28809

Least Common Multiple (LCM) of 291 and 297 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 291 and 297. First we will calculate the prime factors of 291 and 297.

Prime Factorization of 291

Prime factors of 291 are 3, 97. Prime factorization of 291 in exponential form is:

291 = 31 × 971

Prime Factorization of 297

Prime factors of 297 are 3, 11. Prime factorization of 297 in exponential form is:

297 = 33 × 111

Now multiplying the highest exponent prime factors to calculate the LCM of 291 and 297.

LCM(291,297) = 33 × 971 × 111
LCM(291,297) = 28809