What is the Least Common Multiple of 561 and 572?
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 561 and 572 is 29172.
LCM(561,572) = 29172
Least Common Multiple of 561 and 572 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 561 and 572, than apply into the LCM equation.
GCF(561,572) = 11
LCM(561,572) = ( 561 × 572) / 11
LCM(561,572) = 320892 / 11
LCM(561,572) = 29172
Least Common Multiple (LCM) of 561 and 572 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 561 and 572. First we will calculate the prime factors of 561 and 572.
Prime Factorization of 561
Prime factors of 561 are 3, 11, 17. Prime factorization of 561 in exponential form is:
561 = 31 × 111 × 171
Prime Factorization of 572
Prime factors of 572 are 2, 11, 13. Prime factorization of 572 in exponential form is:
572 = 22 × 111 × 131
Now multiplying the highest exponent prime factors to calculate the LCM of 561 and 572.
LCM(561,572) = 31 × 111 × 171 × 22 × 131
LCM(561,572) = 29172
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