What is the Least Common Multiple of 3904 and 3921?
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 3904 and 3921 is 15307584.
LCM(3904,3921) = 15307584
Least Common Multiple of 3904 and 3921 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 3904 and 3921, than apply into the LCM equation.
GCF(3904,3921) = 1
LCM(3904,3921) = ( 3904 × 3921) / 1
LCM(3904,3921) = 15307584 / 1
LCM(3904,3921) = 15307584
Least Common Multiple (LCM) of 3904 and 3921 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 3904 and 3921. First we will calculate the prime factors of 3904 and 3921.
Prime Factorization of 3904
Prime factors of 3904 are 2, 61. Prime factorization of 3904 in exponential form is:
3904 = 26 × 611
Prime Factorization of 3921
Prime factors of 3921 are 3, 1307. Prime factorization of 3921 in exponential form is:
3921 = 31 × 13071
Now multiplying the highest exponent prime factors to calculate the LCM of 3904 and 3921.
LCM(3904,3921) = 26 × 611 × 31 × 13071
LCM(3904,3921) = 15307584
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