0

Subjects>Math>Math & Arithmetic

Is 21 a prime or composite number?

Anonymous

∙ 12y ago

Updated: 10/18/2022

21 is a Composite Number.

A Prime number is a whole number that only has two factors which are itself and one. A composite number has factors in addition to one and itself.

21 is divisible by 3 and 7.

Wiki User

∙ 11y ago

What else can I help you with?

Continue Learning about Math & Arithmetic

Is number 21 prime or composite?

number 21 is prime

Is the prime number 21 is a prime number?

21 is a composite number, not a prime, having prime factors 3x7.

Why is 21 a prime number?

Who says it is? 21 is a composite number!

Is 21 and 31 a prime number?

21 is composite number that is a multiple of 3. 31 is a prime number.

Is 23 21 19 prime or composite?

19 is a prime number. Its only factors are 1 and 19. 21 is a composite number. Its factors are 1, 3, 7, and 21. 23 is a prime number. Its only factors are 1 and 23.

Related Questions

Is 21 a prime number of composite?

21 is a composite number

Is number 21 prime or composite?

number 21 is prime

Is the prime number 21 is a prime number?

21 is a composite number, not a prime, having prime factors 3x7.

Why is 21 a prime number?

Who says it is? 21 is a composite number!

Is 21 prime or compostie?

21 is a composite number.

21 a prime or a compostie?

21 is a composite number.

Is the number 21 prime composite or neither?

3 * 7 = 21 21 is not prime

Is 21 and 31 a prime number?

21 is composite number that is a multiple of 3. 31 is a prime number.

Is this number prime or composite 21?

A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite. 21 is composite.

Is 23 21 19 prime or composite?

19 is a prime number. Its only factors are 1 and 19. 21 is a composite number. Its factors are 1, 3, 7, and 21. 23 is a prime number. Its only factors are 1 and 23.

Which number is not a prime or a composite number 21 15 8 and 1?

1 is not composite or prime.

Is 21 a prime number?

A prime number is any integer evenly divisible by only itself, and the number 1. Since 21 is divisible by 3 and 7, it is a composite number, not a prime number.No, 21 is not a prime number.21 is divisible by 1, 3, 7, & 21No. 21=3*7

Trending Questions

How long is 118 minutes? What does 4 feet equal to inches? What comes next in the series 2 4 8 100? What percentage is 5 out of 9? Steps in conversion of hexadecimal to decimal? What is eight ninths subtract four sevenths as a fraction? What percentage is 1735 out of 1740? How many square feet in 40 x 23 inches? Atomic mass of mercury-? Which of the following is not included in the manufacturing industry cluster 1 Apparel Manufacturing 2 Printing 3 Oil refinery 4 Textile Mills and Products? How many hours are there in 8 years? How many hours and minutes is 280 minutes? Is mass measured in cubic centimeters? What percent is 6 out of 14? What is the least common denominator for 13 56 and 38? What does product form mean? If the sales price is 50 and the regular price is 201 what is the discount? Why is the distance formula important to geometry? Can you split the word necessary into syllables? What is the integral of cosine?

Resources

Top Categories

Product

Company

Copyright ©2025 Infospace Holdings LLC, A System1 Company. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Answers.