What is the Least Common Multiple of 704 and 715?
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 704 and 715 is 45760.
LCM(704,715) = 45760
Least Common Multiple of 704 and 715 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 704 and 715, than apply into the LCM equation.
GCF(704,715) = 11
LCM(704,715) = ( 704 × 715) / 11
LCM(704,715) = 503360 / 11
LCM(704,715) = 45760
Least Common Multiple (LCM) of 704 and 715 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 704 and 715. First we will calculate the prime factors of 704 and 715.
Prime Factorization of 704
Prime factors of 704 are 2, 11. Prime factorization of 704 in exponential form is:
704 = 26 × 111
Prime Factorization of 715
Prime factors of 715 are 5, 11, 13. Prime factorization of 715 in exponential form is:
715 = 51 × 111 × 131
Now multiplying the highest exponent prime factors to calculate the LCM of 704 and 715.
LCM(704,715) = 26 × 111 × 51 × 131
LCM(704,715) = 45760
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