What is the Greatest Common Factor of 637 and 645?
Greatest common factor (GCF) of 637 and 645 is 1.
GCF(637,645) = 1
We will now calculate the prime factors of 637 and 645, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 637 and 645.
How to find the GCF of 637 and 645?
We will first find the prime factorization of 637 and 645. After we will calculate the factors of 637 and 645 and find the biggest common factor number .
Step-1: Prime Factorization of 637
Prime factors of 637 are 7, 13. Prime factorization of 637 in exponential form is:
637 = 72 × 131
Step-2: Prime Factorization of 645
Prime factors of 645 are 3, 5, 43. Prime factorization of 645 in exponential form is:
645 = 31 × 51 × 431
Step-3: Factors of 637
List of positive integer factors of 637 that divides 637 without a remainder.
1, 7, 13, 49, 91
Step-4: Factors of 645
List of positive integer factors of 645 that divides 637 without a remainder.
1, 3, 5, 15, 43, 129, 215
Final Step: Biggest Common Factor Number
We found the factors and prime factorization of 637 and 645. The biggest common factor number is the GCF number.
So the greatest common factor 637 and 645 is 1.
Also check out the Least Common Multiple of 637 and 645
Related Greatest Common Factors of 637
- GCF of 637 and 641
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- GCF of 637 and 644
- GCF of 637 and 645
- GCF of 637 and 646
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- GCF of 637 and 648
- GCF of 637 and 649
- GCF of 637 and 650
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- GCF of 637 and 653
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- GCF of 637 and 655
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Related Greatest Common Factors of 645
- GCF of 645 and 649
- GCF of 645 and 650
- GCF of 645 and 651
- GCF of 645 and 652
- GCF of 645 and 653
- GCF of 645 and 654
- GCF of 645 and 655
- GCF of 645 and 656
- GCF of 645 and 657
- GCF of 645 and 658
- GCF of 645 and 659
- GCF of 645 and 660
- GCF of 645 and 661
- GCF of 645 and 662
- GCF of 645 and 663
- GCF of 645 and 664
- GCF of 645 and 665