What is the Least Common Multiple of 870 and 889?
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 870 and 889 is 773430.
LCM(870,889) = 773430
Least Common Multiple of 870 and 889 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 870 and 889, than apply into the LCM equation.
GCF(870,889) = 1
LCM(870,889) = ( 870 × 889) / 1
LCM(870,889) = 773430 / 1
LCM(870,889) = 773430
Least Common Multiple (LCM) of 870 and 889 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 870 and 889. First we will calculate the prime factors of 870 and 889.
Prime Factorization of 870
Prime factors of 870 are 2, 3, 5, 29. Prime factorization of 870 in exponential form is:
870 = 21 × 31 × 51 × 291
Prime Factorization of 889
Prime factors of 889 are 7, 127. Prime factorization of 889 in exponential form is:
889 = 71 × 1271
Now multiplying the highest exponent prime factors to calculate the LCM of 870 and 889.
LCM(870,889) = 21 × 31 × 51 × 291 × 71 × 1271
LCM(870,889) = 773430
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