Prime Factorization of 121
Find the prime factorization of 121. Express 121 as a product of prime numbers.
Answer:
121 = 11^2
Step-by-Step Solution
Step 1
Understand Prime Factorization
To find the prime factorization of 121, 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
Check Divisibility by 2
121 is an odd number, so it is not divisible by 2.
We move on to check the next prime number: 3.
Step 3
Divide by 11
11 is a prime number that divides our current value. We can divide by 11 twice:
121 ÷ 11 = 11
11 ÷ 11 = 1
After dividing by 11, we have 1 remaining.
Step 4
Write the Prime Factorization
Now we combine all the prime factors we found:
Expanded form: 121 = 11 × 11
Exponential form: 121 = 11^2
We can verify: 11 × 11 = 121 ✓