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What is the Least Common Multiple of 12975 and 12980?

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 12975 and 12980 is 33683100.

LCM(12975,12980) = 33683100

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Least Common Multiple of 12975 and 12980 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 12975 and 12980, than apply into the LCM equation.

GCF(12975,12980) = 5
LCM(12975,12980) = ( 12975 × 12980) / 5
LCM(12975,12980) = 168415500 / 5
LCM(12975,12980) = 33683100

Least Common Multiple (LCM) of 12975 and 12980 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 12975 and 12980. First we will calculate the prime factors of 12975 and 12980.

Prime Factorization of 12975

Prime factors of 12975 are 3, 5, 173. Prime factorization of 12975 in exponential form is:

12975 = 31 × 52 × 1731

Prime Factorization of 12980

Prime factors of 12980 are 2, 5, 11, 59. Prime factorization of 12980 in exponential form is:

12980 = 22 × 51 × 111 × 591

Now multiplying the highest exponent prime factors to calculate the LCM of 12975 and 12980.

LCM(12975,12980) = 31 × 52 × 1731 × 22 × 111 × 591
LCM(12975,12980) = 33683100