## Free Prime Factorization Calculator

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### Let's say something about PRIME numbers first:

• are whole numbers that
• can't be divided by any number - other than 1 and itself (with no remainder)
• are always odd numbers (but not all odd numbers are primes)
• are greater than 1 (1 is NOT a prime number)

On the other hand, every composite number can be factored to primes, and this is what this calculator is for.

### Now let's remind ourselfs what are FACTORS:

 3 × 5 = 15 factor × factor = multiple (product)

### Composites examples:

• 12 = 3 × 2 × 2 = 3 × 22
=> 12 is divisible by 2, 3, 4 and 6 (apart from 1 and 12)

• 15 = 3 × 5
=> 15 is divisible by 3 and 5 (apart from 1 and 15)

• 54 = 2 × 3 × 3 × 3 = 2 × 33
=> 54 is divisible by 1, 2, 3, 6, 9, 18 and 27 (apart from 1 and 54)

### Primes examples:

• 5 = 5 × 1
=> is divisible only by 5 and 1

• 11 = 11 × 1
=> is divisible only by 11 and 1

• 29 = 29 × 1
=> is divisible only by 29 and 1

### Prime Factorization Calculator:

 Enter the number: Prime factors are: H

### TABLE of PRIME and COMPOSITE numbers to 100.

 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100