What is the Least Common Multiple of 724 and 740?
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 724 and 740 is 133940.
LCM(724,740) = 133940
Least Common Multiple of 724 and 740 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 724 and 740, than apply into the LCM equation.
GCF(724,740) = 4
LCM(724,740) = ( 724 × 740) / 4
LCM(724,740) = 535760 / 4
LCM(724,740) = 133940
Least Common Multiple (LCM) of 724 and 740 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 724 and 740. First we will calculate the prime factors of 724 and 740.
Prime Factorization of 724
Prime factors of 724 are 2, 181. Prime factorization of 724 in exponential form is:
724 = 22 × 1811
Prime Factorization of 740
Prime factors of 740 are 2, 5, 37. Prime factorization of 740 in exponential form is:
740 = 22 × 51 × 371
Now multiplying the highest exponent prime factors to calculate the LCM of 724 and 740.
LCM(724,740) = 22 × 1811 × 51 × 371
LCM(724,740) = 133940
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