SOLUTION: Is 191 a prime number.How do i find out?

Algebra.Com
Question 4871: Is 191 a prime number.How do i find out?
Answer by rapaljer(4671)   (Show Source): You can put this solution on YOUR website!
First find the and find that it is a number between 13 and 14, since and .

Now you must divide 191 by each prime number up to and including 14, and show that 191 is NOT divisible by any of those numbers. Since 191 is NOT divisible by 2, 3, 5, 7, 11, or 13, this is a prime number.

R^2 at SCC

RELATED QUESTIONS

Hello! I have 4 questions... 1) Is there a formula for finding all possible divisors... (answered by khwang)
How do you figure out the prime factorization of a number and what exactly does that... (answered by stanbon,Fombitz)
how do i solve √23 to simplified radical form when 23 is a prime... (answered by Alan3354)
How do you prove that 5 is a prime... (answered by bonster)
What is prime factorization? How do I find the prime factorization of 90? (answered by xcentaur)
How do I find prime... (answered by Alan3354)
How do I find the probability of choosing neither an odd nor a prime number between 1 and (answered by ikleyn)
how do you figure out the factors of a number and how do you know if it is prime or... (answered by longjonsilver)
To determine the number of trout in a lake, a conservationist, catches 129 trout, tags... (answered by josgarithmetic,ikleyn)