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3Blue1Brown

@3blue1brown · 8.7M subscribers

3Blue1Brown’s most viewed videos of 2019

Lifetime totals, not views in this range.

Snapshot from 19 Oct 2026.

  1. Rank 1:
    But what is a Fourier series?  From heat flow to drawing with circles | DE4

    But what is a Fourier series? From heat flow to drawing with circles | DE4

    19M views30 Jun 201924:47(opens in a new tab)

  2. Rank 2:
    The most unexpected answer to a counting puzzle

    The most unexpected answer to a counting puzzle

    14.3M views13 Jan 20195:13(opens in a new tab)

  3. Rank 3:
    Why do prime numbers make these spirals? | Dirichlet’s theorem and pi approximations

    Why do prime numbers make these spirals? | Dirichlet’s theorem and pi approximations

    7.6M views8 Oct 201922:21(opens in a new tab)

  4. Rank 4:
    Differential equations, a tourist's guide | DE1

    Differential equations, a tourist's guide | DE1

    6.2M views31 Mar 201927:16(opens in a new tab)

  5. Rank 5:
    Bayes theorem, the geometry of changing beliefs

    Bayes theorem, the geometry of changing beliefs

    6M views22 Dec 201915:11(opens in a new tab)

  6. Rank 6:
    The unexpectedly hard windmill question (2011 IMO, P2)

    The unexpectedly hard windmill question (2011 IMO, P2)

    5.8M views4 Aug 201916:03(opens in a new tab)

  7. Rank 7:
    e^(iπ) in 3.14 minutes, using dynamics | DE5

    e^(iπ) in 3.14 minutes, using dynamics | DE5

    3.4M views7 Jul 20194:08(opens in a new tab)

  8. Rank 8:
    But what is a partial differential equation?  | DE2

    But what is a partial differential equation? | DE2

    3.3M views21 Apr 201917:39(opens in a new tab)

  9. Rank 9:
    Solving the heat equation | DE3

    Solving the heat equation | DE3

    1.7M views16 Jun 201914:13(opens in a new tab)

  10. Rank 10:
    Cramer's rule, explained geometrically | Chapter 12, Essence of linear algebra

    Cramer's rule, explained geometrically | Chapter 12, Essence of linear algebra

    1.6M views17 Mar 201912:12(opens in a new tab)

  11. Rank 11:
    How colliding blocks act like a beam of light...to compute pi.

    How colliding blocks act like a beam of light...to compute pi.

    1.4M views3 Feb 201914:41(opens in a new tab)

  12. Rank 12:
    Pure Fourier series animation montage

    Pure Fourier series animation montage

    690.2K views3 Jul 201912:29(opens in a new tab)

  13. Rank 13:
    The quick proof of Bayes' theorem

    The quick proof of Bayes' theorem

    566.6K views22 Dec 20193:48(opens in a new tab)

  14. Rank 14:
    Q&A with Grant, windy walk edition

    Q&A with Grant, windy walk edition

    451.3K views23 Nov 201919:06(opens in a new tab)