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Is 145 a Prime Number?

Is 145 a prime number? "No, 145 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 383 with only 2 factors, i.e. 1 and 383 are called prime numbers. However, numbers like 651 with more than 2 factors are called composite numbers. Let us find out how and why is 145 a prime number or a composite number?

Is 145 a prime number? - No
Is 145 a composite number? - Yes
Prime Factors of 145 - 5, 29
Factors of 145 - 1, 5, 29, 145
Is 145 a perfect square? - No

Is 145 a Prime or Composite?

Is 145 a Prime Number?

No, 145 is not a prime number. The number 145 is divisible by 1, 5, 29, 145. For a number to be classified as a prime number, it should have exactly two factors. Since 145 has more than two factors, i.e. 1, 5, 29, 145, it is not a prime number.

Is 145 a Prime Number?

Why is 145 not a Prime Number?

To understand whether 145 is composite or prime, it is important to find its factors.

Factors of 145: 1, 5, 29, 145

Since 145 has more than 2 factors, we can say that 145 is not a prime number.

☛ Prime Number Calculator

Is 145 a Composite Number?

Yes, since 145 has more than two factors i.e. 1, 5, 29, 145. In other words, 145 is a composite number because 145 has more than 2 factors.

Problem Statements:

Is 145 a Prime Number?	No
Is 145 a Composite Number?	Yes
Multiples of 145	145, 290, 435, 580, 725, 870, 1015, 1160, 1305, 1450
Square of 145	21025
Is 145 a Perfect Cube?	No
Square Root of 145	12.041595
Cube Root of 145	5.253579
Is 145 an Even Number?	No
Is 145 a Perfect Square?	No
Is 145 an Odd Number?	Yes

Fun Facts:

Prime numbers greater than 5 can be represented in the form of either 6n + 1 or 6n - 1. Example - 71 is a prime number and it can be written as 71 = 6 × 12 - 1
A perfect square (square number) is always a composite number.
1 is neither prime nor composite.

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