What is the Greatest Common Factor of 625 and 644?
Greatest common factor (GCF) of 625 and 644 is 1.
GCF(625,644) = 1
We will now calculate the prime factors of 625 and 644, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 625 and 644.
How to find the GCF of 625 and 644?
We will first find the prime factorization of 625 and 644. After we will calculate the factors of 625 and 644 and find the biggest common factor number .
Step-1: Prime Factorization of 625
Prime factors of 625 are 5. Prime factorization of 625 in exponential form is:
625 = 54
Step-2: Prime Factorization of 644
Prime factors of 644 are 2, 7, 23. Prime factorization of 644 in exponential form is:
644 = 22 × 71 × 231
Step-3: Factors of 625
List of positive integer factors of 625 that divides 625 without a remainder.
1, 5, 25, 125
Step-4: Factors of 644
List of positive integer factors of 644 that divides 625 without a remainder.
1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322
Final Step: Biggest Common Factor Number
We found the factors and prime factorization of 625 and 644. The biggest common factor number is the GCF number.
So the greatest common factor 625 and 644 is 1.
Also check out the Least Common Multiple of 625 and 644
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- GCF of 625 and 645
Related Greatest Common Factors of 644
- GCF of 644 and 648
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