Question

find the prime factorization of
the number 40.
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: Recall prime factorization

Prime factorization of a number is expressing it as a product of prime numbers. Start with the smallest prime number, 2.
Divide 40 by 2: \( 40 \div 2 = 20 \)

Step2: Continue dividing by 2

Divide 20 by 2: \( 20 \div 2 = 10 \)

Step3: Continue dividing by 2

Divide 10 by 2: \( 10 \div 2 = 5 \)

Step4: 5 is a prime number

Now we have \( 40 = 2 \times 2 \times 2 \times 5 \). Ordering from least to greatest, the first prime factor is 2.

Answer:

2