What is the Greatest Common Factor of 870 and 889?
Greatest common factor (GCF) of 870 and 889 is 1.
GCF(870,889) = 1
We will now calculate the prime factors of 870 and 889, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 870 and 889.
How to find the GCF of 870 and 889?
We will first find the prime factorization of 870 and 889. After we will calculate the factors of 870 and 889 and find the biggest common factor number .
Step-1: 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
Step-2: Prime Factorization of 889
Prime factors of 889 are 7, 127. Prime factorization of 889 in exponential form is:
889 = 71 × 1271
Step-3: Factors of 870
List of positive integer factors of 870 that divides 870 without a remainder.
1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 87, 145, 174, 290, 435
Step-4: Factors of 889
List of positive integer factors of 889 that divides 870 without a remainder.
1, 7, 127
Final Step: Biggest Common Factor Number
We found the factors and prime factorization of 870 and 889. The biggest common factor number is the GCF number.
So the greatest common factor 870 and 889 is 1.
Also check out the Least Common Multiple of 870 and 889
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