Is 1501 a prime number?
2026-02-28 23:20 Diff

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Last updated on August 5, 2025

Prime numbers have only 1 and the number itself as factors. They are used in digital security and in securing digital payments. The topics below will help you gain more knowledge about prime numbers and how they are categorized.

Is 1501 a prime number?

The number 1501 has 4 factors that are capable of dividing the number completely without leaving any remainder. Thus, the number 1501 is a non-prime number. The factors of 1501 include 1, 19, 79, and 1501.

Why is 1501 not a prime number?

For a number to be classified as a prime number, it must have exactly 2 factors: 1 and itself. However, 1501 has more than 2 factors, which makes it a composite number.


Below are a few methods to determine whether a number is prime or composite.


The different methods we can use to check if a number is a prime number are explained below:

  1. Counting Divisors Method
  2. Divisibility Test
  3. Prime Number Chart
  4. Prime Factorization

Using the Counting Divisors Method

In the counting divisors method, we check whether the number is divisible by any numbers other than 1 and itself.


The counting divisors method for 1501 would simply be:


Divisors of 1501 = 1, 19, 79, 1501
Number of divisors = 4


Since 1501 has more than 2 divisors, it is considered a composite number.

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Using the Divisibility Method

In the divisibility method, a prime number will have only 2 divisors: 1 and itself.


The divisors of 1501 are 1, 19, 79, and 1501.


Thus, 1501 consists of 4 factors that divide it completely without any remainder, confirming it is not a prime number.

Using the Prime Number Chart

The prime number chart lists all prime numbers in a given range.


The list of prime numbers from 1500 to 1600 are:


1511, 1523, 1791, 1543, 1549, 1579, 1559, 1567, 1571, 1579, 1583, 1597.


1501 is not present in this list, confirming that it is not a prime number.

Using the Prime Factorization

This method is used specifically for composite numbers. Since 1501 is a composite number, its prime factorization is:


Factors of 1501 = 19 × 79


Thus, 1501 is not a prime number but a composite number.

Common mistakes to avoid when determining if 1501 is a prime number

It is highly likely we commit some mistakes due to confusion or unclear understanding. Let us look at possible mistakes we may make and try to avoid them.

FAQ’s for “Is 1501 a prime number”

1.What is the largest prime factor of 1501?

The largest prime factor of 1501 is 79.

2.What is the smallest prime factor of 1501?

The smallest prime factor of 1501 is 19.

3.Is 1501 a composite number?

Yes, 1501 is a composite number.

4.How to express 1501 as a product of prime factors?

1501 can be expressed as 19×79.

5.Represent 1501 in the prime factor tree?

A prime factor tree shows 1501 splitting into 19 and 79.

6.Do any perfect squares exist in the prime factors of 1501?

7.Do any perfect cubes exist in the prime factors of 1501?

8.What can 1501 be divided by?

1501 can be divided by 1, 19, 79, and 1501.

Glossary for "Is 1501 a Prime Number?"

Prime Number: A natural number greater than 1 that has exactly two distinct positive divisors: 1 and itself. For example, 2, 3, and 5 are prime numbers.

Composite Number: A natural number greater than 1 that has more than two distinct positive divisors. For example, 4, 6, and 8 are composite numbers.

Divisibility Test: A mathematical method used to determine whether a number can be divided evenly by another number without leaving a remainder.

Prime Factorization: The process of expressing a number as a product of its prime factors. For example, 12 = 2 × 2 × 3.

Divisors: Numbers that divide a given number completely without leaving a remainder. For example, the divisors of 12 are 1, 2, 3, 4, 6, and 12.
 

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Hiralee Lalitkumar Makwana

About the Author

Hiralee Lalitkumar Makwana has almost two years of teaching experience. She is a number ninja as she loves numbers. Her interest in numbers can be seen in the way she cracks math puzzles and hidden patterns.

Fun Fact

: She loves to read number jokes and games.