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Play Number Ninja Prime Numbers as a stand alone web app.

Number Ninja Prime Numbers

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This idle tapping mathematics game inspired by similar slicing games tests your knowledge of multiplication and prime numbers.

  • Left click or tap on the numbers to split them into their factors.
  • Take out as many numbers as you can within 1 minute.
  • Don’t touch prime numbers.





Play Number Ninja Prime Numbers Game Online

Children and parents can play this number game by clicking in the window below.

Alternatively kids and adults can play this prime numbers video game for free as a web application here.

Number Ninja Prime Numbers Game for Kids Video Game Play Instructions

How to Play

Slice each of the numbers to reduce them to their primes.

  • Starting the Game
    • Select the green and white play button to load the welcome screen.
    • On the welcome screen, select the play button below the game’s title to begin.
    • Your web browser automatically saves your high score.
  • Game Controls
    • Desktop
      • With your mouse, left click to split the numbers to their factors.
    • Touchscreen devices
      • Tap on the numbers onscreen with your fingers to split them into their factors.
  • Game Play
    • Basic rules
      • Swipe at the numbers to reduce them to their primes.
        • Swiping a number reduces it to 2 of its factors.
        • If one of the factors is not a prime number itself, you can slice it as well.
      • Do not slice prime numbers.
      • Play for 60 seconds (1 minute) or until you make 3 mistakes.
    • End game
      • Each time you slice a prime number, you lose a life.
        • You have 3 lives in this game.
        • Lose all 3 lives and it’s game over.
      • If you miss a number that isn’t a prime, you don’t lose lives.
      • The game over screen shows your score and percentage of correct answers.
        • You won’t be able to claim 100 percent accuracy if you don’t split all the primes that appear.
        • This is harder than it looks, as sometimes non-prime numbers fall offscreen.
    • Scoring
      • You gain 10 points for each number you split.
      • Split as many numbers as you can before the timer runs out to earn a higher score.
    • Tips
      • Be careful where you move your cursor or fingers. Avoid hitting any of the prime numbers by accident.
      • A prime number is any number greater than 1 where the number only has 2 factors (itself and 1).
        • Many numbers are not primes. Their factors include 1 or more other numbers as well as themselves and 1.
        • Here are a few examples.
          • 2, 3, 5, and 7 are prime numbers. To get them, you can only multiply them by 1.
          • 6, 9, 15, and 16 are not prime numbers.
            • The factors of 6 are 1, 6, and 3
            • The factors of 9 are 1, 3, and 9
            • The factors of 15 are 1, 3, 5, and 9
            • The factors of 16 are 1, 2, 4, 8, and 16
          • In-game, you will need to cut these numbers several times before you reduce them to their primes.
      • Here are a few rules of thumb to remember.
        • Most even numbers, which are divisible by 2, are not primes.
          • The sole exception is 2 itself.
          • Expect to keep splitting even numbers until they are reduced to 2.
        • Many odd numbers that appear on a multiplication table are not primes.
          • With the exception of 9, most single-digit odd numbers (1, 3, 5, 7) are primes.
          • The odd multiples of 7 (21, 35, 49, 63, 77, onwards) are not primes.
          • Both 9 and the odd multiples of 9 (27, 45, 63, 81, 99, onward) are not primes.
          • Odd numbers that don’t appear as a multiple of another small number are primes.
  • Target Audience
    • The game is suited for children learning about prime numbers.
    • The game has no adult themed content.

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Number Ninja Prime Numbers
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Free Online Number Ninja Prime Numbers Video Game for Children & Adults Screenshots

Number Ninja Prime Numbers Game Welcome Screen Screenshot.
Number Ninja Prime Numbers Game How To Play Screenshot.
Number Ninja Prime Numbers Game Start Screenshot.
Number Ninja Prime Numbers Game Play Screenshot.
Number Ninja Prime Numbers Game Over Screenshot.

Mobile Friendly Cross Browser Support

This game is rendered in mobile-friendly HTML5, so it offers cross-device gameplay. You can play it on mobile devices like Apple iPhones, Google Android powered cell phones from manufactures like Samsung, tablets like the iPad or Kindle Fire, laptops, and Windows-powered desktop computers. All game files are stored locally in your web browser cache. This game works in Apple Safari, Google Chrome, Microsoft Edge, Mozilla Firefox, Opera and other modern web browsers.

Where To? What Next?

This game was published in these categories: Numbers, Slicing. You can visit any of them to select other fun games to play.

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