What is the Least Common Multiple of 750 and 770?
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 750 and 770 is 57750.
LCM(750,770) = 57750
Least Common Multiple of 750 and 770 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 750 and 770, than apply into the LCM equation.
GCF(750,770) = 10
LCM(750,770) = ( 750 × 770) / 10
LCM(750,770) = 577500 / 10
LCM(750,770) = 57750
Least Common Multiple (LCM) of 750 and 770 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 750 and 770. First we will calculate the prime factors of 750 and 770.
Prime Factorization of 750
Prime factors of 750 are 2, 3, 5. Prime factorization of 750 in exponential form is:
750 = 21 × 31 × 53
Prime Factorization of 770
Prime factors of 770 are 2, 5, 7, 11. Prime factorization of 770 in exponential form is:
770 = 21 × 51 × 71 × 111
Now multiplying the highest exponent prime factors to calculate the LCM of 750 and 770.
LCM(750,770) = 21 × 31 × 53 × 71 × 111
LCM(750,770) = 57750
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