Advertisements
Advertisements
Question
Find if the following number is a prime number:
91
Advertisements
Solution
91
The divisors of 91 are 1, 7, 13, and 91 i.e. 91 has more than 2 factors. Therefore 91 is not a prime number.
APPEARS IN
RELATED QUESTIONS
What are prime numbers? Give ten examples.
Write all the prime numbers between:
80 and 100
Express the following odd number as the sum of three odd prime number:
63
State the following statement is True or False.
The sum of two prime numbers is always a prime number.
Show that the following pairs are co-primes:
343, 432
Which of the following is a composite number?
The number of prime numbers between 11 and 60 is _________
Find the sum of all the prime numbers between 10 and 20 and check whether that sum is divisible by all the single digit numbers.
The numbers 13 and 31 are prime numbers. Both these numbers have the same digits 1 and 3. Find such pairs of prime numbers up to 100.
Which statement correctly describes a prime number?
