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प्रश्न
A number which has only two factors is called a ______.
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उत्तर
A number which has only two factors is called a prime number.
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संबंधित प्रश्न
Make a list of seven consecutive numbers, none of which is prime.
Find if the following number is a prime number:
87
Give examples of five pairs of co-primes.
State the following statement as True or False.
If two numbers are co-primes, at least one of them must be a prime number.
Fill in the blank.
The HCF of two consecutive odd numbers is _________
Write 'T' for true and 'F' for false for the following statement.
Every even number is composite.
The digits of the prime number 13 can be reversed to get another prime number 31. Find if any such pairs exist upto 100
The only even prime number is ________________
Write five pairs of prime numbers less than 20 whose sum is divisible by 5. (Hint : 3 + 7 = 10)
Prime numbers do not have any factors.
