Question

find the prime factorization of the number 28. order the factors from least to greatest. remember, 1 is not a prime number. ? × □ × □ enter the number that belongs in the green box.

Explanation:

Step1: Start with smallest prime

The smallest prime number is 2. Check if 28 is divisible by 2. $28 \div 2 = 14$.

Step2: Divide quotient by 2

Now, take the quotient 14 and divide by 2 again. $14 \div 2 = 7$.

Step3: Check if 7 is prime

7 is a prime number, so we stop here. The prime factorization of 28 is $2 \times 2 \times 7$. When ordered from least to greatest, the first factor (in the green box) is 2.

Answer:

2