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प्रश्न
Which of the following number is prime?
26
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उत्तर
26 has four factors (1, 2, 13, 26).
Therefore, it is not a prime number. It is a composite number.
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संबंधित प्रश्न
What are composite numbers? Can a composite number be odd? If yes, write the smallest odd composite number.
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Write all the pairs of twin primes between 50 and 100
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State the following statement is True or False.
The sum of two prime numbers is always a prime number.
Show that the following pair is co-prime.
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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 is true about composite numbers?
Which pair represents twin prime numbers?
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