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Numberphile

@numberphile · 4.8M subscribers

Numberphile’s most viewed videos of 2020

Lifetime totals, not views in this range.

Snapshot from 19 Oct 2026.

  1. Rank 1:
    The Daddy of Big Numbers (Rayo's Number) - Numberphile

    The Daddy of Big Numbers (Rayo's Number) - Numberphile

    2.7M views12 Apr 202015:26(opens in a new tab)

  2. Rank 2:
    How to Fill a Klein Bottle - Numberphile

    How to Fill a Klein Bottle - Numberphile

    2.2M views1 Mar 20209:53(opens in a new tab)

  3. Rank 3:
    A Miraculous Proof (Ptolemy's Theorem) - Numberphile

    A Miraculous Proof (Ptolemy's Theorem) - Numberphile

    1.1M views9 Feb 202038:28(opens in a new tab)

  4. Rank 4:
    A New Discovery about Dodecahedrons - Numberphile

    A New Discovery about Dodecahedrons - Numberphile

    1M views14 Jan 202019:01(opens in a new tab)

  5. Rank 5:
    Why is this 15-Puzzle Impossible? - Numberphile

    Why is this 15-Puzzle Impossible? - Numberphile

    967.2K views21 Apr 202023:44(opens in a new tab)

  6. Rank 6:
    The Coronavirus Curve - Numberphile

    The Coronavirus Curve - Numberphile

    904.6K views25 Mar 202022:18(opens in a new tab)

  7. Rank 7:
    Beautiful Trigonometry - Numberphile

    Beautiful Trigonometry - Numberphile

    885.3K views16 Jun 202012:07(opens in a new tab)

  8. Rank 8:
    A Prime Surprise (Mertens Conjecture) - Numberphile

    A Prime Surprise (Mertens Conjecture) - Numberphile

    878.8K views23 Jan 20209:56(opens in a new tab)

  9. Rank 9:
    A Surprising Pi and 5 - Numberphile

    A Surprising Pi and 5 - Numberphile

    761.3K views31 May 202016:40(opens in a new tab)

  10. Rank 10:
    Russian Multiplication - Numberphile

    Russian Multiplication - Numberphile

    748.6K views4 Feb 20206:50(opens in a new tab)

  11. Rank 11:
    Impossible Squares - Numberphile

    Impossible Squares - Numberphile

    677.9K views4 Apr 202013:25(opens in a new tab)

  12. Rank 12:
    Euler Squares - Numberphile

    Euler Squares - Numberphile

    588.3K views8 May 202015:27(opens in a new tab)

  13. Rank 13:
    The Forgotten Number System - Numberphile

    The Forgotten Number System - Numberphile

    528.9K views5 Nov 202010:21(opens in a new tab)

  14. Rank 14:
    Lewis Carroll's Pillow Problem - Numberphile

    Lewis Carroll's Pillow Problem - Numberphile

    483.5K views28 Apr 202010:27(opens in a new tab)

  15. Rank 15:
    Random Fibonacci Numbers - Numberphile

    Random Fibonacci Numbers - Numberphile

    475.8K views8 Mar 202010:36(opens in a new tab)

  16. Rank 16:
    2.920050977316 - Numberphile

    2.920050977316 - Numberphile

    470.8K views26 Nov 202012:42(opens in a new tab)

  17. Rank 17:
    Matrix Factorization - Numberphile

    Matrix Factorization - Numberphile

    404.9K views16 May 202016:34(opens in a new tab)

  18. Rank 18:
    The 17-Klein Bottle - Numberphile

    The 17-Klein Bottle - Numberphile

    398.6K views23 Feb 202011:44(opens in a new tab)

  19. Rank 19:
    Dungeon Numbers - Numberphile

    Dungeon Numbers - Numberphile

    390.1K views29 Jul 202013:48(opens in a new tab)

  20. Rank 20:
    Strings and Loops within Pi - Numberphile

    Strings and Loops within Pi - Numberphile

    366.6K views20 Feb 202014:01(opens in a new tab)

  21. Rank 21:
    The Brussels Choice - Numberphile

    The Brussels Choice - Numberphile

    364.1K views21 Aug 202016:38(opens in a new tab)

  22. Rank 22:
    Superhero Triangles - Numberphile

    Superhero Triangles - Numberphile

    360.4K views28 Jan 202016:37(opens in a new tab)

  23. Rank 23:
    How do brains count? - Numberphile

    How do brains count? - Numberphile

    346.1K views14 Nov 202021:05(opens in a new tab)

  24. Rank 24:
    569936821221962380720 - Numberphile

    569936821221962380720 - Numberphile

    338.9K views19 Aug 20205:54(opens in a new tab)

  25. Rank 25:
    Bomb Blast Radius - Numberphile

    Bomb Blast Radius - Numberphile

    297.5K views27 Oct 202014:55(opens in a new tab)

  26. Rank 26:
    Tentacles Akimbo (with Cliff Stoll) - Numberphile

    Tentacles Akimbo (with Cliff Stoll) - Numberphile

    292.4K views16 Feb 202010:18(opens in a new tab)

  27. Rank 27:
    Mesolabe Compass and Square Roots - Numberphile

    Mesolabe Compass and Square Roots - Numberphile

    280.5K views15 Mar 20209:05(opens in a new tab)

  28. Rank 28:
    Pentagons and the Golden Ratio - Numberphile

    Pentagons and the Golden Ratio - Numberphile

    279.3K views9 Feb 20206:56(opens in a new tab)

  29. Rank 29:
    Hat Problems - Numberphile

    Hat Problems - Numberphile

    276.7K views6 Jul 202016:12(opens in a new tab)

  30. Rank 30:
    How to build a Giant Dome - Numberphile

    How to build a Giant Dome - Numberphile

    267.9K views4 Dec 202015:26(opens in a new tab)

  31. Rank 31:
    Mathematics and Coronavirus - Numberphile

    Mathematics and Coronavirus - Numberphile

    247K views31 Mar 20209:52(opens in a new tab)

  32. Rank 32:
    Predators and Prey - Numberphile

    Predators and Prey - Numberphile

    230.6K views6 Sept 202016:53(opens in a new tab)

  33. Rank 33:
    Poncelet's Porism - Numberphile

    Poncelet's Porism - Numberphile

    227.6K views19 Sept 20207:07(opens in a new tab)

  34. Rank 34:
    Inca Knot Numbers - Numberphile

    Inca Knot Numbers - Numberphile

    218.5K views10 Dec 202010:08(opens in a new tab)

  35. Rank 35:
    3 Ways to Draw Squares Inside Triangles - Numberphile

    3 Ways to Draw Squares Inside Triangles - Numberphile

    213.5K views22 Mar 20209:20(opens in a new tab)

  36. Rank 36:
    Statistics, Storks, and Babies - Numberphile

    Statistics, Storks, and Babies - Numberphile

    175.6K views25 Aug 20209:20(opens in a new tab)

  37. Rank 37:
    Colouring Numbers - Numberphile

    Colouring Numbers - Numberphile

    175K views21 Jan 202011:14(opens in a new tab)

  38. Rank 38:
    Colouring Knots - Numberphile

    Colouring Knots - Numberphile

    174.1K views11 Oct 202017:26(opens in a new tab)

  39. Rank 39:
    Squares and Tilings - Numberphile

    Squares and Tilings - Numberphile

    166.5K views12 Aug 202016:35(opens in a new tab)

  40. Rank 40:
    Butterflies and Gyroids - Numberphile

    Butterflies and Gyroids - Numberphile

    133.6K views17 Dec 202011:55(opens in a new tab)