What is the Least Common Multiple of 427 and 438?
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 427 and 438 is 187026.
LCM(427,438) = 187026
Least Common Multiple of 427 and 438 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 427 and 438, than apply into the LCM equation.
GCF(427,438) = 1
LCM(427,438) = ( 427 × 438) / 1
LCM(427,438) = 187026 / 1
LCM(427,438) = 187026
Least Common Multiple (LCM) of 427 and 438 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 427 and 438. First we will calculate the prime factors of 427 and 438.
Prime Factorization of 427
Prime factors of 427 are 7, 61. Prime factorization of 427 in exponential form is:
427 = 71 × 611
Prime Factorization of 438
Prime factors of 438 are 2, 3, 73. Prime factorization of 438 in exponential form is:
438 = 21 × 31 × 731
Now multiplying the highest exponent prime factors to calculate the LCM of 427 and 438.
LCM(427,438) = 71 × 611 × 21 × 31 × 731
LCM(427,438) = 187026
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