Prime Factorization of 100
Find the prime factorization of 100. Express 100 as a product of prime numbers.
Answer:
100 = 2^2 × 5^2
Step-by-Step Solution
Step 1
Understand Prime Factorization
To find the prime factorization of 100, we need to express it as a product of prime numbers.
We do this by repeatedly dividing by the smallest prime that divides evenly, starting with 2.
A prime number is only divisible by 1 and itself (2, 3, 5, 7, 11, 13, ...).
Step 2
Divide by 2
Since 100 is even, we start by dividing by 2. We can divide by 2 twice:
100 ÷ 2 = 50
50 ÷ 2 = 25
After dividing by 2, we have 25 remaining.
Step 3
Divide by 5
5 is a prime number that divides our current value. We can divide by 5 twice:
25 ÷ 5 = 5
5 ÷ 5 = 1
After dividing by 5, we have 1 remaining.
Step 4
Write the Prime Factorization
Now we combine all the prime factors we found:
Expanded form: 100 = 2 × 2 × 5 × 5
Exponential form: 100 = 2^2 × 5^2
We can verify: 2 × 2 × 5 × 5 = 100 ✓