What is the Least Common Multiple of 710 and 720?
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 710 and 720 is 51120.
LCM(710,720) = 51120
Least Common Multiple of 710 and 720 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 710 and 720, than apply into the LCM equation.
GCF(710,720) = 10
LCM(710,720) = ( 710 × 720) / 10
LCM(710,720) = 511200 / 10
LCM(710,720) = 51120
Least Common Multiple (LCM) of 710 and 720 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 710 and 720. First we will calculate the prime factors of 710 and 720.
Prime Factorization of 710
Prime factors of 710 are 2, 5, 71. Prime factorization of 710 in exponential form is:
710 = 21 × 51 × 711
Prime Factorization of 720
Prime factors of 720 are 2, 3, 5. Prime factorization of 720 in exponential form is:
720 = 24 × 32 × 51
Now multiplying the highest exponent prime factors to calculate the LCM of 710 and 720.
LCM(710,720) = 24 × 51 × 711 × 32
LCM(710,720) = 51120
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