Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Abbie23

  • 2 years ago

Why isn't 1 a prime number? :)

  • This Question is Closed
  1. alexwee123
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    because there is only one factor for 1 and a prime number requires 2

  2. mahmit2012
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    caz many theorem will fail

  3. jim_thompson5910
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    The fundamental theorem of arithmetic states that you can represent any number uniquely as a product of primes If 1 were prime, then a number like 12 can be written as 12 = 2*2*3 12 = 1*2*2*3 12 = 1*1*2*2*3 ...etc so 12 is being represented as a product of primes but it's not unique. So make the representation unique, we exclude 1 from being prime Note: the order of the factors doesn't matter

  4. ZSpence
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Beacause its too COOL

  5. superhelper
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    because nothing can go into it besides itself

  6. SmoothMath
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Every prime number has exactly two factors! For example, 2 is prime because it only has factors 1 and 2. 3 only has factors 1 and 3. 5 only has factors 1 and 5. Now, most non-primes, it's easy to realize, "Oh, okay, it has more than 2 factors." 1 is the unique case where it has fewer than 2 factors. Just 1 =/

  7. ZSpence
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    THank you (:

  8. Not the answer you are looking for?
    Search for more explanations.

    Search OpenStudy
    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.