What is the Least Common Multiple of 13680 and 13696?
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 13680 and 13696 is 11710080.
LCM(13680,13696) = 11710080
Least Common Multiple of 13680 and 13696 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 13680 and 13696, than apply into the LCM equation.
GCF(13680,13696) = 16
LCM(13680,13696) = ( 13680 × 13696) / 16
LCM(13680,13696) = 187361280 / 16
LCM(13680,13696) = 11710080
Least Common Multiple (LCM) of 13680 and 13696 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 13680 and 13696. First we will calculate the prime factors of 13680 and 13696.
Prime Factorization of 13680
Prime factors of 13680 are 2, 3, 5, 19. Prime factorization of 13680 in exponential form is:
13680 = 24 × 32 × 51 × 191
Prime Factorization of 13696
Prime factors of 13696 are 2, 107. Prime factorization of 13696 in exponential form is:
13696 = 27 × 1071
Now multiplying the highest exponent prime factors to calculate the LCM of 13680 and 13696.
LCM(13680,13696) = 27 × 32 × 51 × 191 × 1071
LCM(13680,13696) = 11710080
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