answersLogoWhite

0

Why is 19 a prime number but 15 is not a prime number?

User Avatar

Anonymous

∙ 14y ago
Updated: 8/18/2019

19 only has 2 factors - itself and 1.

15 has 4 factors - itself, 1, 3, and 5.

Prime numbers can only have 2 factors.

19 is prime, 15 is composite.

User Avatar

Wiki User

∙ 14y ago
Copy

What else can I help you with?

Related Questions

Which is not a prime number 13 15 17 19?

3 x 5 = 15, so 15 is not a prime number.


Which is a composite Number 15 17 19 or 23?

15 is composite number 17, 19 and 23 are prime numbers.


What prime number is between 15 and 20?

17... and 19 !


What is the prime number for 19?

19 is a prime.


What is the prime factor of 19?

19 is a prime number, so it has no prime factorization.


Is 19 a prim number or a composite number?

19 is a prime number.19 is a prime number.19 is a prime number.19 is a prime number.


What number is prime and between 15 and 25 and has 57 as a multiple?

It is 19


What is the greatest common factor of 19 and 15?

Do a factor tree. 15 ^ 5 3 (3 & 5 are prime) 19 is a prime number. 15: 3 * 5 19: 19 ^^They have nothing in common. Therefore, the answer is 1.


What is a prime number 105 or 27 or 19 or 9?

19 is the prime number.


Is 19 composite number or prime number?

19 is prime.


Is 19 a prime number or a compsite?

19 is a prime number


Is the number 19 a prime?

19 is a prime number.

Trending Questions
Why are the Boston bruins called the bruins? What is the meaning of Asian section in library? Why did Perseus kill Medusa? What is the federal tax liability on Oregon state income tax form? What did the policy of isolationism effect the us during world war 1? How can I effectively perform modified tricep dips to target and strengthen my triceps? Do people watch tennis on thanksgiving? How much does it cost for a waitress to obtain a license to serve alcohol? What is record spur length for wild turkey? What is the significance of the beta-branched side chain in organic chemistry reactions? What kind of organism has pseudopods? Can shaving cream cause cancer? Where can different mortgage home rates be viewed? Where can one find the best cleaners in their area? How many days is in 14 hours? What are some of the products that are produced by IKA? What caused the indus valley culture to decline? What animals does not have a backbone and have more than 2 legs? Which team, red or blue, emerged victorious in the intense competition of Pandemic Legacy Season 1? What has the author Brigitta Neumeister-Taroni written?

Resources

Leaderboard All Tags Unanswered

Top Categories

Algebra Chemistry Biology World History English Language Arts Psychology Computer Science Economics

Product

Community Guidelines Honor Code Flashcard Maker Study Guides Math Solver FAQ

Company

About Us Contact Us Terms of Service Privacy Policy Disclaimer Cookie Policy IP Issues
Answers Logo
Copyright ©2025 Answers.com | Lunias Media Inc. 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.