What is the Greatest Common Factor of 42458 and 42470?

Greatest common factor (GCF) of 42458 and 42470 is 2.

GCF(42458,42470) = 2

We will now calculate the prime factors of 42458 and 42470, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42458 and 42470.

How to find the GCF of 42458 and 42470?

We will first find the prime factorization of 42458 and 42470. After we will calculate the factors of 42458 and 42470 and find the biggest common factor number .

Step-1: Prime Factorization of 42458

Prime factors of 42458 are 2, 13, 23, 71. Prime factorization of 42458 in exponential form is:

42458 = 2¹ × 13¹ × 23¹ × 71¹

Step-2: Prime Factorization of 42470

Prime factors of 42470 are 2, 5, 31, 137. Prime factorization of 42470 in exponential form is:

42470 = 2¹ × 5¹ × 31¹ × 137¹

Step-3: Factors of 42458

List of positive integer factors of 42458 that divides 42458 without a remainder.

1, 2, 13, 23, 26, 46, 71, 142, 299, 598, 923, 1633, 1846, 3266, 21229

Step-4: Factors of 42470

List of positive integer factors of 42470 that divides 42458 without a remainder.

1, 2, 5, 10, 31, 62, 137, 155, 274, 310, 685, 1370, 4247, 8494, 21235

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42458 and 42470. The biggest common factor number is the GCF number.
So the greatest common factor 42458 and 42470 is 2.

Also check out the Least Common Multiple of 42458 and 42470