# Resources tagged with: Prime numbers

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### There are 7 results

Broad Topics > Numbers and the Number System > Prime numbers

### Factorial Fun

##### Age 16 to 18 Challenge Level:

How many divisors does factorial n (n!) have?

### Different by One

##### Age 14 to 16 Challenge Level:

Can you make lines of Cuisenaire rods that differ by 1?

### Why 24?

##### Age 14 to 16 Challenge Level:

Take any prime number greater than 3 , square it and subtract one. Working on the building blocks will help you to explain what is special about your results.

### Factors and Multiples Game

##### Age 7 to 16 Challenge Level:

A game in which players take it in turns to choose a number. Can you block your opponent?

### An Introduction to Proof by Contradiction

##### Age 14 to 18

An introduction to proof by contradiction, a powerful method of mathematical proof.

### Prime Sequences

##### Age 16 to 18 Challenge Level:

This group tasks allows you to search for arithmetic progressions in the prime numbers. How many of the challenges will you discover for yourself?

### Prime Counter

##### Age 16 to 18 Challenge Level:

A short challenge concerning prime numbers.