What is the Least Common Multiple of 621 and 633?
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 621 and 633 is 131031.
LCM(621,633) = 131031
Least Common Multiple of 621 and 633 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 621 and 633, than apply into the LCM equation.
GCF(621,633) = 3
LCM(621,633) = ( 621 × 633) / 3
LCM(621,633) = 393093 / 3
LCM(621,633) = 131031
Least Common Multiple (LCM) of 621 and 633 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 621 and 633. First we will calculate the prime factors of 621 and 633.
Prime Factorization of 621
Prime factors of 621 are 3, 23. Prime factorization of 621 in exponential form is:
621 = 33 × 231
Prime Factorization of 633
Prime factors of 633 are 3, 211. Prime factorization of 633 in exponential form is:
633 = 31 × 2111
Now multiplying the highest exponent prime factors to calculate the LCM of 621 and 633.
LCM(621,633) = 33 × 231 × 2111
LCM(621,633) = 131031
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