Is 343 a Prime Number?

Is 343 a prime number? "No, 343 is not a prime number." A number can be classified as prime or composite depending on the factors it contains; it could either have only 2 factors or more than 2 factors. Numbers like 467 with only 2 factors, i.e. 1 and 467 are called prime numbers. However, numbers like 560 with more than 2 factors are called composite numbers. Let us find out how and why is 343 a prime number or a composite number?

• Is 343 a prime number? - No
• Is 343 a composite number? - Yes
• Is 343 a perfect square? - No
• Prime Factors of 343 - 7
• Factors of 343 - 1, 7, 49, 343

Is 343 a Prime Number?

No, 343 is not a prime number. The number 343 is divisible by 1, 7, 49, 343. For a number to be classified as a prime number, it should have exactly two factors. Since 343 has more than two factors, i.e. 1, 7, 49, 343, it is not a prime number.

Why is 343 not a Prime Number?

To understand whether 343 is composite or prime, it is important to find its factors.

Factors of 343: 1, 7, 49, 343

Since 343 has more than 2 factors, we can say that 343 is not a prime number.

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Is 343 a Composite Number?

Yes, since 343 has more than two factors i.e. 1, 7, 49, 343. In other words, 343 is a composite number because 343 has more than 2 factors.

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Fun Facts:

• 5 is the only prime number having the last digit as 5.
• A semiprime number is a composite number that is the product of exactly two prime numbers. Example - 115 is semiprime, since 115 can be written as 5 × 23.
• A pair of prime numbers X and Y are said to be twin prime numbers if the absolute difference between them is 2. Example - (311, 313) are twin prime numbers.

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