What is the Least Common Multiple of 721 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 721 and 740 is 533540.
LCM(721,740) = 533540
Least Common Multiple of 721 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 721 and 740, than apply into the LCM equation.
GCF(721,740) = 1
LCM(721,740) = ( 721 × 740) / 1
LCM(721,740) = 533540 / 1
LCM(721,740) = 533540
Least Common Multiple (LCM) of 721 and 740 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 721 and 740. First we will calculate the prime factors of 721 and 740.
Prime Factorization of 721
Prime factors of 721 are 7, 103. Prime factorization of 721 in exponential form is:
721 = 71 × 1031
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 721 and 740.
LCM(721,740) = 71 × 1031 × 22 × 51 × 371
LCM(721,740) = 533540
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