Calculators for everyday use!
Custom Search
Home Average Speed Decimal To Fraction

Prime Factors Of A Number

Thinking of a number in particular? Find out if it is a prime number or if it is a composite number with prime factors.

Prime numbers are positive integers that can only be divided by themselves and 1. Apart from 2 all prime numbers are, by definition, odd numbers.

The first 10 prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29.

Some numbers are a composite of two or more prime numbers. For example, take 36 and 37. If we list the prime factors of 36, we have 2, 2, 3 and 3. If we list the factors of 37, we have only 37.

So we say that 37 is a prime number, but 36 is a composite number.

To determine whether a number is prime or composite, type a number in the box below and press 'Factors Of Number'.

Prime Factors Of A Number

Lowest Common Multiple/
Highest Common Factor


Home About Us
Contact Us Which Day This Date Add Time To Date

CLICK HERE if you have any ideas for calculators you would like to see added; or improvements to existing ones made. Please tell us of any errors observed!

About Numbers
Combine & Permutate
Roman/Arabic Numerals
Factors Of A Number
Mental Multiplication
Nature Of Numbers
Prime Numbers
Random Numbers Generator
Square Root Progression
Binary To Decimal
Liquid Measures
Roman/Arabic Numerals
Fahrenheit To Centigrade
Number Base Converter
Dates & Times
Add/Subtract Time Elements
Add/Subtract Time From Date
Days Between Dates
Days In Consecutive Months
Divide Time Into Segments
Months Of The Year
Multiply/Divide Time
Which Day This Date
Which Week Of The Year
Credit Card Calculator
Cumulative Discount Tables
Discount Tables
Internal Rate Of Return
Payback Period
Rates Of Interest
Rental Equivalents
Reserve Funds
Time To Accumulate Funds
Convert Decimal To Fraction
Convert Fraction To Decimal
Add/Sub/Mul/Div Fractions
Add/Subtract Lengths
Lengths Conversions
Multiply/Divide Lengths
Multiplication Tables
Multiply/Divide Lengths
Multiply/Divide Time
Multiply/Divide Weights
Aspect Ratio Calculator
Average Speed Calculator
Component Of A Circle
Create And Compare Colors
Mean And Standard Deviation
Spaces In The Alphabet
Zodiac Signs
Percentage Change
Add/Subtract Weights
Multiply/Divide Weights
Weights Conversions