Which of the following is NOT a prime number?1. 10012. 13013. 16014. 1

1.	Which of the following is NOT a prime number?1. 10012. 13013. 16014. 1901
Answer» Correct Answer - Option 1 : 1001 Given: 1001, 1301, 1601 and 1901 Concept used: A prime number is a positive integer having exactly two factors. If p is a prime, then it’s only factors are necessarily 1 and p itself. Any number which does not follow this is termed as composite numbers, which means that they can be factored into other positive integers. Calculation: 1001 = 1 × 7 × 11 × 13 1301 = 1 × 1301 1601 = 1 × 1601 1901 = 1 × 1901 1001 is the number with more than two factors ∴ The correct answer is 1001

Which of the following is NOT a prime number?1. 10012. 13013. 16014. 1901

Answer» Correct Answer - Option 1 : 1001

Given:

1001, 1301, 1601 and 1901

Concept used:

A prime number is a positive integer having exactly two factors. If p is a prime, then it’s only factors are necessarily 1 and p itself. Any number which does not follow this is termed as composite numbers, which means that they can be factored into other positive integers.

Calculation:

1001 = 1 × 7 × 11 × 13

1301 = 1 × 1301

1601 = 1 × 1601

1901 = 1 × 1901

1001 is the number with more than two factors

∴ The correct answer is 1001

Discussion

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