What is the Greatest Common Factor of 691 and 705?
Greatest common factor (GCF) of 691 and 705 is 1.
GCF(691,705) = 1
We will now calculate the prime factors of 691 and 705, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 691 and 705.
How to find the GCF of 691 and 705?
We will first find the prime factorization of 691 and 705. After we will calculate the factors of 691 and 705 and find the biggest common factor number .
Step-1: Prime Factorization of 691
Prime factors of 691 are 691. Prime factorization of 691 in exponential form is:
691 = 6911
Step-2: Prime Factorization of 705
Prime factors of 705 are 3, 5, 47. Prime factorization of 705 in exponential form is:
705 = 31 × 51 × 471
Step-3: Factors of 691
List of positive integer factors of 691 that divides 691 without a remainder.
1
Step-4: Factors of 705
List of positive integer factors of 705 that divides 691 without a remainder.
1, 3, 5, 15, 47, 141, 235
Final Step: Biggest Common Factor Number
We found the factors and prime factorization of 691 and 705. The biggest common factor number is the GCF number.
So the greatest common factor 691 and 705 is 1.
Also check out the Least Common Multiple of 691 and 705
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