What is the Least Common Multiple of 261 and 270?
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 261 and 270 is 7830.
LCM(261,270) = 7830
Least Common Multiple of 261 and 270 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 261 and 270, than apply into the LCM equation.
GCF(261,270) = 9
LCM(261,270) = ( 261 × 270) / 9
LCM(261,270) = 70470 / 9
LCM(261,270) = 7830
Least Common Multiple (LCM) of 261 and 270 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 261 and 270. First we will calculate the prime factors of 261 and 270.
Prime Factorization of 261
Prime factors of 261 are 3, 29. Prime factorization of 261 in exponential form is:
261 = 32 × 291
Prime Factorization of 270
Prime factors of 270 are 2, 3, 5. Prime factorization of 270 in exponential form is:
270 = 21 × 33 × 51
Now multiplying the highest exponent prime factors to calculate the LCM of 261 and 270.
LCM(261,270) = 33 × 291 × 21 × 51
LCM(261,270) = 7830
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Related Least Common Multiples of 270
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