A day full of math games & activities. Find one near you.

Is 140 a Prime Number?

Is 140 a prime number? If a number has only two factors, i.e. 1 and the number itself, it is known as a prime number. In contrast, composite numbers have more than two factors. By this explanation, can we answer the question - is 140 a prime number? According to the definition mentioned above, we can say "No, 140 is not a prime number." Now let us take a look at the detailed solution of why is 140 a prime number or a composite number?

Is 140 a prime number? - No
Is 140 a composite number? - Yes
Is 140 a perfect square? - No
Prime Factors of 140 - 2, 5, 7
Factors of 140 - 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140

Is 140 a Prime or Composite?

Is 140 a Prime Number?

No, 140 is not a prime number. The number 140 is divisible by 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140. For a number to be classified as a prime number, it should have exactly two factors. Since 140 has more than two factors, i.e. 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, it is not a prime number.

Is 140 a Prime Number?

Why is 140 not a Prime Number?

To understand whether 140 is prime or composite, it is important to find its factors.

Factors of 140: 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140

Since 140 has more than 2 factors, we can say that 140 is not a prime number.

☛ Prime Number Calculator

Is 140 a Composite Number?

Yes, since 140 has more than two factors i.e. 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140. In other words, 140 is a composite number because 140 has more than 2 factors.

Problem Statements:

Is 140 a Prime Number?	No
Is 140 a Composite Number?	Yes
Square of 140	19600
Cube Root of 140	5.192486
Is 140 an Even Number?	Yes
Is 140 an Odd Number?	No
Square Root of 140	11.83216
Is 140 a Perfect Cube?	No
Is 140 a Perfect Square?	No
Multiples of 140	140, 280, 420, 560, 700, 840, 980, 1120, 1260, 1400

Fun Facts:

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.
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
2 is the smallest prime number.

☛ Also Check: