Prime Numbers Quiz

Prime Numbers Quiz brings back the story of Eratosthenes, a Greek scholar who created one of the earliest methods to find prime numbers. His method, called the Sieve of Eratosthenes, involved crossing out multiples of numbers to discover the primes that remained. Imagine solving such problems more than two thousand years ago with no calculators or computers. The method still works and is often taught in classrooms today. This Math Quiz on prime and composite numbers set will make you rethink how you approach numbers. Take this prime number test and see how well you can spot primes quickly. It is a math quiz on primes that is both fun and sharpens your skills.

Prime Numbers

What is the prime factorisation of 30?

2, 3, 5

1, 2, 3, 5

1, 2, 3, 5, 30

None of the above

Which of the following numbers is a prime number?

If a number is prime, what can we say about its divisors?

It has exactly one divisor

It has exactly two divisors

It has at least three divisors

It has an odd number of divisors

If a number is prime, what is true about its prime factorization?

It has no prime factors

It includes at least two prime numbers

It includes only even prime numbers

It consists of itself only

If a number is divisible by a prime number other than itself, what can we say?

It is composite

It is prime

It is odd

It is even

Which of the following pairs of numbers are both prime?

1 and 2

9 and 11

5 and 7

15 and 17

What is the highest common factor (HCF) of two distinct prime numbers?

The larger prime

Their product

What is the LCM of two distinct prime numbers?

Their sum

Their difference

Their average

Their product

If p is a prime greater than 5, what is the remainder when p is divided by 10?

1 or 9

1, 3, 7, or 9

3 or 7

0 or 5

Which prime number is the sum of two squares?

Your score is

The average score is 59%

Sample Questions from This Quiz

What is the prime factorisation of 30?
What is the LCM of two distinct prime numbers?
If p is a prime greater than 5, what is the remainder when p is divided by 10?
If a number is prime, what can we say about its divisors?
what is the hcf of two distinct prime numbers

Try the full quiz and see how many of these you can answer!

Beyond The Prime Numbers Quiz

Trigonometry Part 2

Your calculator called, it wants to join this trig adventure!

Trigonometry Part 3

If triangles could talk, they’d totally ace this quiz!

Trigonometry Part 4

The only place where sin, cos, tan are totally legal!

Set Theory Part 1

Sets aren’t for sofas. Test your math brain instead!

Set Theory Part 2

This quiz has more sets than a gym class!

Set Theory Part 3

Sets, subsets, and a dash of chaos await inside!

Set Theory Part 4

Come for the sets, stay for the mental gymnastics!

Time And Distance Part 2

Solve fast or be overtaken by a sleepy turtle!