Factors of 643

The numbers that divide 643 evenly are known as factors of 643. A factor of 643 is a number that divides the number without a remainder. The factors of 643 are 1 and 643.

Negative factors of 643: -1 and -643.

Prime factors of 643: 643 (as 643 is a prime number).

Prime factorization of 643: 643.

The sum of factors of 643: 1 + 643 = 644

Factors can be found using different methods. Mentioned below are some commonly used methods:

1. Finding factors using multiplication
2. Finding factors using the division method
3. Prime factors and Prime factorization

To find factors using multiplication, we need to identify the pairs of numbers that are multiplied to give 643. Since 643 is a prime number, the only multiplication that results in 643 is 643 × 1. Thus, the positive factor pair of 643 is: (1, 643). For every positive factor, there is a negative factor.

Dividing the given numbers with whole numbers until the remainder becomes zero and listing out the numbers which result as whole numbers as factors. Factors can be calculated by following a simple division method -

Step 1: Divide 643 by 1, 643 ÷ 1 = 643.

Step 2: Check if any number divides 643 evenly until 643 itself. Because 643 is a prime number, no other whole numbers divide it evenly.

Therefore, the factors of 643 are: 1 and 643.

The factors can be found by dividing it with prime numbers. We can find the prime factors using the following methods:

• Using prime factorization
• Using a factor tree

Using Prime Factorization: Since 643 is a prime number, it cannot be broken down further into other prime factors. The prime factorization of 643 is simply 643 itself.

The factor tree is the graphical representation of breaking down any number into prime factors. However, since 643 is a prime number, it cannot be broken down further, and its factor tree is just the number itself.

Factor Pairs: Two numbers that are multiplied to give a specific number are called factor pairs. Both positive and negative factors constitute factor pairs.

• Positive factor pairs of 643: (1, 643).
• Negative factor pairs of 643: (-1, -643).

• Factors: The numbers that divide the given number without leaving a remainder are called factors. For example, the factors of 643 are 1 and 643.

• Prime factors: The factors which are prime numbers. For example, 643 is a prime factor of itself.

• Factor pairs: Two numbers in a pair that are multiplied to give the original number are called factor pairs. For example, the factor pair of 643 is (1, 643).

• Prime number: A number greater than 1 that has no divisors other than 1 and itself. For example, 643 is a prime number.

• Multiplication: The mathematical operation of scaling one number by another. For example, 643 × 1 = 643.