What is the Least Common Multiple of 538 and 542?
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 538 and 542 is 145798.
LCM(538,542) = 145798
Least Common Multiple of 538 and 542 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 538 and 542, than apply into the LCM equation.
GCF(538,542) = 2
LCM(538,542) = ( 538 × 542) / 2
LCM(538,542) = 291596 / 2
LCM(538,542) = 145798
Least Common Multiple (LCM) of 538 and 542 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 538 and 542. First we will calculate the prime factors of 538 and 542.
Prime Factorization of 538
Prime factors of 538 are 2, 269. Prime factorization of 538 in exponential form is:
538 = 21 × 2691
Prime Factorization of 542
Prime factors of 542 are 2, 271. Prime factorization of 542 in exponential form is:
542 = 21 × 2711
Now multiplying the highest exponent prime factors to calculate the LCM of 538 and 542.
LCM(538,542) = 21 × 2691 × 2711
LCM(538,542) = 145798
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