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What is the Least Common Multiple of 30721 and 30728?

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 30721 and 30728 is 943994888.

LCM(30721,30728) = 943994888

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Least Common Multiple of 30721 and 30728 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 30721 and 30728, than apply into the LCM equation.

GCF(30721,30728) = 1
LCM(30721,30728) = ( 30721 × 30728) / 1
LCM(30721,30728) = 943994888 / 1
LCM(30721,30728) = 943994888

Least Common Multiple (LCM) of 30721 and 30728 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 30721 and 30728. First we will calculate the prime factors of 30721 and 30728.

Prime Factorization of 30721

Prime factors of 30721 are 31, 991. Prime factorization of 30721 in exponential form is:

30721 = 311 × 9911

Prime Factorization of 30728

Prime factors of 30728 are 2, 23, 167. Prime factorization of 30728 in exponential form is:

30728 = 23 × 231 × 1671

Now multiplying the highest exponent prime factors to calculate the LCM of 30721 and 30728.

LCM(30721,30728) = 311 × 9911 × 23 × 231 × 1671
LCM(30721,30728) = 943994888