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प्रश्न
Which of the following number is prime?
23
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उत्तर
23 = 1 × 23
23 = 23 × 1
23 has only two factors, 1 and 23.
Therefore, it is a prime number.
संबंधित प्रश्न
What are composite numbers? Can a composite number be odd? If yes, write the smallest odd composite number.
Are co-primes always primes? If no, illustrate your answer by an example.
Express the following odd number as the sum of three odd prime number:
63
State the following statement is True or False.
1 is the smallest prime number.
State the following statement as True or False.
If two numbers are co-primes, at least one of them must be a prime number.
Show that the following pairs are co-primes:
512, 945
Write seven consecutive composite numbers less than 100 having no prime number between them.
Write all the composite numbers between 21 and 50.
The only even prime number is ________________
Express the following as the sum of two odd prime.
18
