What is the Least Common Multiple of 774 and 778?
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 774 and 778 is 301086.
LCM(774,778) = 301086
Least Common Multiple of 774 and 778 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 774 and 778, than apply into the LCM equation.
GCF(774,778) = 2
LCM(774,778) = ( 774 × 778) / 2
LCM(774,778) = 602172 / 2
LCM(774,778) = 301086
Least Common Multiple (LCM) of 774 and 778 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 774 and 778. First we will calculate the prime factors of 774 and 778.
Prime Factorization of 774
Prime factors of 774 are 2, 3, 43. Prime factorization of 774 in exponential form is:
774 = 21 × 32 × 431
Prime Factorization of 778
Prime factors of 778 are 2, 389. Prime factorization of 778 in exponential form is:
778 = 21 × 3891
Now multiplying the highest exponent prime factors to calculate the LCM of 774 and 778.
LCM(774,778) = 21 × 32 × 431 × 3891
LCM(774,778) = 301086
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