What is the Least Common Multiple of 426 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 426 and 438 is 31098.
LCM(426,438) = 31098
Least Common Multiple of 426 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 426 and 438, than apply into the LCM equation.
GCF(426,438) = 6
LCM(426,438) = ( 426 × 438) / 6
LCM(426,438) = 186588 / 6
LCM(426,438) = 31098
Least Common Multiple (LCM) of 426 and 438 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 426 and 438. First we will calculate the prime factors of 426 and 438.
Prime Factorization of 426
Prime factors of 426 are 2, 3, 71. Prime factorization of 426 in exponential form is:
426 = 21 × 31 × 711
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 426 and 438.
LCM(426,438) = 21 × 31 × 711 × 731
LCM(426,438) = 31098
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