What are the Factors of 191?

So, what are the factors of 191?

• Factors of 191: 1, 191

• Sum of Factors of 191: 192

• Negative Factors of 191: -1, -191

• Prime Factors of 191: 1, 191

• Prime Factorization of 191: 191

There are two ways to find the factors of 191: using factor pairs and using prime factorization.

Factor pairs of 191 are any two numbers that, when multiplied together, equal 191. The question to ask is “what two numbers multiplied together equal 191?” Every factor can be paired with another factor and multiplying the two will result in 191.

In this case, we can see that 191 is a prime number. By definition, a prime number is a number that doesn’t have any other factors other than itself and 1.

So, 191 only has one factor pair:

(1, 191)

If you also consider negative factors, there is also a second factor pair:

(-1, -191)

Prime factorization is when you break down the factors of 191 to just the prime factors and expressing 191 as a product of those prime factors.

In this case, because 191 is a prime number, we can simply state the primary factorization as 191.

For most numbers, we would take the smallest prime factor that is larger than 1 to start to break down the focus number. In this case, the smallest prime factor larger than 1 is 191.

191 ÷ 191 = 1

If we divide 191 by 191, we simply get 1, which can’t be broken down any further.

So, the prime factorization of 191 is just 191.

Practice your factoring skills by exploring how to factor other numbers, like the ones below:

Factors of 89 - The factors of 89 are 1, 89

Factors of 36 - The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, 36

Factors of 23 - The factors of 23 are 1, 23

Factors of 7 - The factors of 7 are 1, 7