What is the Greatest Common Factor of 399 and 413?
Greatest common factor (GCF) of 399 and 413 is 7.
GCF(399,413) = 7
We will now calculate the prime factors of 399 and 413, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 399 and 413.
How to find the GCF of 399 and 413?
We will first find the prime factorization of 399 and 413. After we will calculate the factors of 399 and 413 and find the biggest common factor number .
Step-1: Prime Factorization of 399
Prime factors of 399 are 3, 7, 19. Prime factorization of 399 in exponential form is:
399 = 31 × 71 × 191
Step-2: Prime Factorization of 413
Prime factors of 413 are 7, 59. Prime factorization of 413 in exponential form is:
413 = 71 × 591
Step-3: Factors of 399
List of positive integer factors of 399 that divides 399 without a remainder.
1, 3, 7, 19, 21, 57, 133
Step-4: Factors of 413
List of positive integer factors of 413 that divides 399 without a remainder.
1, 7, 59
Final Step: Biggest Common Factor Number
We found the factors and prime factorization of 399 and 413. The biggest common factor number is the GCF number.
So the greatest common factor 399 and 413 is 7.
Also check out the Least Common Multiple of 399 and 413
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