Instructions:
Start the timer by clicking on the top left number in the grid.
Find a path from the top-left corner to the bottom-right corner by clicking on prime numbers only.
Your path must be continuous - each number you select must be adjacent (horizontally, vertically, or diagonally) to the previous one.
A different winding path is generated each time you play. Try to beat your best time!
Help Video
Prime Numbers Video
Click for a reminder of what prime numbers are.
Suggested
Factor Trees
Create factor trees to find the prime factors of the given numbers.
The short web address is:
Transum.org/go/?Num=576
Suggested
Sieve of Eratosthenes
A self checking, interactive version of the Sieve of Eratosthenes method of finding prime numbers.
The short web address is:
Transum.org/go/?Num=230
Suggested
Prime Labyrinth
Find the path to the centre of the labyrinth by moving along the prime numbers.
The short web address is:
Transum.org/go/?Num=379
Teacher's notes for this and other Transum puzzles, exercises and activities are available here when you are signed in to your Transum subscription account. If you do not yet have an account and you are a teacher, tutor or parent you can apply for one by completing the form on the Sign Up page.
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