What is the Least Common Multiple of 675 and 681?
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 675 and 681 is 153225.
LCM(675,681) = 153225
Least Common Multiple of 675 and 681 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 675 and 681, than apply into the LCM equation.
GCF(675,681) = 3
LCM(675,681) = ( 675 × 681) / 3
LCM(675,681) = 459675 / 3
LCM(675,681) = 153225
Least Common Multiple (LCM) of 675 and 681 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 675 and 681. First we will calculate the prime factors of 675 and 681.
Prime Factorization of 675
Prime factors of 675 are 3, 5. Prime factorization of 675 in exponential form is:
675 = 33 × 52
Prime Factorization of 681
Prime factors of 681 are 3, 227. Prime factorization of 681 in exponential form is:
681 = 31 × 2271
Now multiplying the highest exponent prime factors to calculate the LCM of 675 and 681.
LCM(675,681) = 33 × 52 × 2271
LCM(675,681) = 153225
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