What is the Least Common Multiple of 67904 and 67920?
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 67904 and 67920 is 288252480.
LCM(67904,67920) = 288252480
Least Common Multiple of 67904 and 67920 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 67904 and 67920, than apply into the LCM equation.
GCF(67904,67920) = 16
LCM(67904,67920) = ( 67904 × 67920) / 16
LCM(67904,67920) = 4612039680 / 16
LCM(67904,67920) = 288252480
Least Common Multiple (LCM) of 67904 and 67920 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 67904 and 67920. First we will calculate the prime factors of 67904 and 67920.
Prime Factorization of 67904
Prime factors of 67904 are 2, 1061. Prime factorization of 67904 in exponential form is:
67904 = 26 × 10611
Prime Factorization of 67920
Prime factors of 67920 are 2, 3, 5, 283. Prime factorization of 67920 in exponential form is:
67920 = 24 × 31 × 51 × 2831
Now multiplying the highest exponent prime factors to calculate the LCM of 67904 and 67920.
LCM(67904,67920) = 26 × 10611 × 31 × 51 × 2831
LCM(67904,67920) = 288252480
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