What is the Least Common Multiple of 361 and 381?
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 361 and 381 is 137541.
LCM(361,381) = 137541
Least Common Multiple of 361 and 381 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 361 and 381, than apply into the LCM equation.
GCF(361,381) = 1
LCM(361,381) = ( 361 × 381) / 1
LCM(361,381) = 137541 / 1
LCM(361,381) = 137541
Least Common Multiple (LCM) of 361 and 381 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 361 and 381. First we will calculate the prime factors of 361 and 381.
Prime Factorization of 361
Prime factors of 361 are 19. Prime factorization of 361 in exponential form is:
361 = 192
Prime Factorization of 381
Prime factors of 381 are 3, 127. Prime factorization of 381 in exponential form is:
381 = 31 × 1271
Now multiplying the highest exponent prime factors to calculate the LCM of 361 and 381.
LCM(361,381) = 192 × 31 × 1271
LCM(361,381) = 137541
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