What is the Least Common Multiple of 722 and 728?
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 722 and 728 is 262808.
LCM(722,728) = 262808
Least Common Multiple of 722 and 728 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 722 and 728, than apply into the LCM equation.
GCF(722,728) = 2
LCM(722,728) = ( 722 × 728) / 2
LCM(722,728) = 525616 / 2
LCM(722,728) = 262808
Least Common Multiple (LCM) of 722 and 728 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 722 and 728. First we will calculate the prime factors of 722 and 728.
Prime Factorization of 722
Prime factors of 722 are 2, 19. Prime factorization of 722 in exponential form is:
722 = 21 × 192
Prime Factorization of 728
Prime factors of 728 are 2, 7, 13. Prime factorization of 728 in exponential form is:
728 = 23 × 71 × 131
Now multiplying the highest exponent prime factors to calculate the LCM of 722 and 728.
LCM(722,728) = 23 × 192 × 71 × 131
LCM(722,728) = 262808
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