What is the Least Common Multiple of 6465 and 6480?
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 6465 and 6480 is 2792880.
LCM(6465,6480) = 2792880
Least Common Multiple of 6465 and 6480 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 6465 and 6480, than apply into the LCM equation.
GCF(6465,6480) = 15
LCM(6465,6480) = ( 6465 × 6480) / 15
LCM(6465,6480) = 41893200 / 15
LCM(6465,6480) = 2792880
Least Common Multiple (LCM) of 6465 and 6480 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 6465 and 6480. First we will calculate the prime factors of 6465 and 6480.
Prime Factorization of 6465
Prime factors of 6465 are 3, 5, 431. Prime factorization of 6465 in exponential form is:
6465 = 31 × 51 × 4311
Prime Factorization of 6480
Prime factors of 6480 are 2, 3, 5. Prime factorization of 6480 in exponential form is:
6480 = 24 × 34 × 51
Now multiplying the highest exponent prime factors to calculate the LCM of 6465 and 6480.
LCM(6465,6480) = 34 × 51 × 4311 × 24
LCM(6465,6480) = 2792880
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