What is the Least Common Multiple of 6721 and 6738?
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 6721 and 6738 is 45286098.
LCM(6721,6738) = 45286098
Least Common Multiple of 6721 and 6738 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 6721 and 6738, than apply into the LCM equation.
GCF(6721,6738) = 1
LCM(6721,6738) = ( 6721 × 6738) / 1
LCM(6721,6738) = 45286098 / 1
LCM(6721,6738) = 45286098
Least Common Multiple (LCM) of 6721 and 6738 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 6721 and 6738. First we will calculate the prime factors of 6721 and 6738.
Prime Factorization of 6721
Prime factors of 6721 are 11, 13, 47. Prime factorization of 6721 in exponential form is:
6721 = 111 × 131 × 471
Prime Factorization of 6738
Prime factors of 6738 are 2, 3, 1123. Prime factorization of 6738 in exponential form is:
6738 = 21 × 31 × 11231
Now multiplying the highest exponent prime factors to calculate the LCM of 6721 and 6738.
LCM(6721,6738) = 111 × 131 × 471 × 21 × 31 × 11231
LCM(6721,6738) = 45286098
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