What is the Least Common Multiple of 423 and 436?
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 423 and 436 is 184428.
LCM(423,436) = 184428
Least Common Multiple of 423 and 436 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 423 and 436, than apply into the LCM equation.
GCF(423,436) = 1
LCM(423,436) = ( 423 × 436) / 1
LCM(423,436) = 184428 / 1
LCM(423,436) = 184428
Least Common Multiple (LCM) of 423 and 436 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 423 and 436. First we will calculate the prime factors of 423 and 436.
Prime Factorization of 423
Prime factors of 423 are 3, 47. Prime factorization of 423 in exponential form is:
423 = 32 × 471
Prime Factorization of 436
Prime factors of 436 are 2, 109. Prime factorization of 436 in exponential form is:
436 = 22 × 1091
Now multiplying the highest exponent prime factors to calculate the LCM of 423 and 436.
LCM(423,436) = 32 × 471 × 22 × 1091
LCM(423,436) = 184428
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