What is the Least Common Multiple of 649 and 653?
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 649 and 653 is 423797.
LCM(649,653) = 423797
Least Common Multiple of 649 and 653 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 649 and 653, than apply into the LCM equation.
GCF(649,653) = 1
LCM(649,653) = ( 649 × 653) / 1
LCM(649,653) = 423797 / 1
LCM(649,653) = 423797
Least Common Multiple (LCM) of 649 and 653 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 649 and 653. First we will calculate the prime factors of 649 and 653.
Prime Factorization of 649
Prime factors of 649 are 11, 59. Prime factorization of 649 in exponential form is:
649 = 111 × 591
Prime Factorization of 653
Prime factors of 653 are 653. Prime factorization of 653 in exponential form is:
653 = 6531
Now multiplying the highest exponent prime factors to calculate the LCM of 649 and 653.
LCM(649,653) = 111 × 591 × 6531
LCM(649,653) = 423797
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