What is the Least Common Multiple of 635 and 647?
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 635 and 647 is 410845.
LCM(635,647) = 410845
Least Common Multiple of 635 and 647 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 635 and 647, than apply into the LCM equation.
GCF(635,647) = 1
LCM(635,647) = ( 635 × 647) / 1
LCM(635,647) = 410845 / 1
LCM(635,647) = 410845
Least Common Multiple (LCM) of 635 and 647 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 635 and 647. First we will calculate the prime factors of 635 and 647.
Prime Factorization of 635
Prime factors of 635 are 5, 127. Prime factorization of 635 in exponential form is:
635 = 51 × 1271
Prime Factorization of 647
Prime factors of 647 are 647. Prime factorization of 647 in exponential form is:
647 = 6471
Now multiplying the highest exponent prime factors to calculate the LCM of 635 and 647.
LCM(635,647) = 51 × 1271 × 6471
LCM(635,647) = 410845
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