composite number: meaning, definition, pronunciation and examples
C2Technical/Academic
Quick answer
What does “composite number” mean?
A positive whole number that has at least one positive divisor other than one and itself.
Audio
Pronunciation
Definition
Meaning and Definition
A positive whole number that has at least one positive divisor other than one and itself.
In mathematics, an integer greater than 1 that is not prime, formed by multiplying two smaller positive integers.
Dialectal Variation
British vs American Usage
Differences
No differences in definition or usage. Spelling of 'number' is identical.
Connotations
Identical; purely mathematical/technical.
Frequency
Identical frequency in respective academic/technical contexts.
Grammar
How to Use “composite number” in a Sentence
The number X is a composite number.Find the prime factors of the composite number Y.Z is composite because it can be expressed as a * b.Vocabulary
Collocations
Examples
Examples of “composite number” in a Sentence
verb
British English
- To solve the problem, you first need to composite the factors. (Note: 'composite' is not standardly used as a verb; this is a creative, non-standard example for illustration.)
American English
- The algorithm is designed to efficiently composite large integers. (See note above.)
adjective
British English
- The students studied composite number properties.
- A factor tree helps visualise composite structure.
American English
- The worksheet focused on composite number identification.
- She explained the composite nature of the integer 42.
Usage
Meaning in Context
Business
Extremely rare; potentially in highly technical finance or cryptography contexts.
Academic
Standard term in mathematics, number theory, and introductory arithmetic education.
Everyday
Virtually never used in casual conversation.
Technical
Core term in mathematics, computer science (algorithms, cryptography), and STEM education.
Vocabulary
Synonyms of “composite number”
Neutral
Weak
Vocabulary
Antonyms of “composite number”
Watch out
Common Mistakes When Using “composite number”
- Thinking '1' is a composite number.
- Confusing 'composite' with 'compound' in non-mathematical senses.
- Forgetting that all even numbers greater than 2 are composite.
FAQ
Frequently Asked Questions
No. By definition, 1 is neither prime nor composite. A composite number must be a positive integer greater than 1.
The smallest composite number is 4 (as 2 and 3 are prime).
No. The even number 2 is prime. However, all other even numbers greater than 2 are composite.
Yes. Square numbers greater than 1 (like 4, 9, 16) are always composite because they have at least the divisor equal to their square root in addition to 1 and themselves.
A positive whole number that has at least one positive divisor other than one and itself.
Composite number is usually technical/academic in register.
Composite number: in British English it is pronounced /ˈkɒmpəzɪt ˈnʌmbə/, and in American English it is pronounced /kəmˈpɑːzɪt ˈnʌmbər/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think of a COMPOSite number as being COM-POSed of (made from) other numbers multiplied together.
Conceptual Metaphor
BUILDING BLOCKS: A composite number is built from smaller number blocks (its factors).
Practice
Quiz
Which of the following statements about composite numbers is true?