What is the Least Common Multiple of 531 and 538?
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 531 and 538 is 285678.
LCM(531,538) = 285678
Least Common Multiple of 531 and 538 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 531 and 538, than apply into the LCM equation.
GCF(531,538) = 1
LCM(531,538) = ( 531 × 538) / 1
LCM(531,538) = 285678 / 1
LCM(531,538) = 285678
Least Common Multiple (LCM) of 531 and 538 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 531 and 538. First we will calculate the prime factors of 531 and 538.
Prime Factorization of 531
Prime factors of 531 are 3, 59. Prime factorization of 531 in exponential form is:
531 = 32 × 591
Prime Factorization of 538
Prime factors of 538 are 2, 269. Prime factorization of 538 in exponential form is:
538 = 21 × 2691
Now multiplying the highest exponent prime factors to calculate the LCM of 531 and 538.
LCM(531,538) = 32 × 591 × 21 × 2691
LCM(531,538) = 285678
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