What is the Least Common Multiple of 675 and 689?
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 689 is 465075.
LCM(675,689) = 465075
Least Common Multiple of 675 and 689 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 689, than apply into the LCM equation.
GCF(675,689) = 1
LCM(675,689) = ( 675 × 689) / 1
LCM(675,689) = 465075 / 1
LCM(675,689) = 465075
Least Common Multiple (LCM) of 675 and 689 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 675 and 689. First we will calculate the prime factors of 675 and 689.
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 689
Prime factors of 689 are 13, 53. Prime factorization of 689 in exponential form is:
689 = 131 × 531
Now multiplying the highest exponent prime factors to calculate the LCM of 675 and 689.
LCM(675,689) = 33 × 52 × 131 × 531
LCM(675,689) = 465075
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