Collatz in all languages in bytes. Cheevos Holes Recent Holes Langs Medals Misc All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 450th MeWhenI 🇻🇦 910 64 92ms 24 Dec 2024 452nd Shanethegamer 🇺🇸 910 77 13ms 15 May 2023 453rd primo-ppcg 🇹🇭 910 93 42ms 7 May 2022 453rd AlephSquirrel 910 93 30ms 21 Jan 2023 453rd kg583 🇺🇸 910 93 29ms 26 Dec 2024 453rd CLOStrophobic 🇮🇹 910 93 31ms 17 Jan 2025 453rd edsrzf 🇳🇿 910 93 30ms 3 Jul 2025 458th MeWhenI 🇻🇦 909 63 238ms 5 May 2022 459th edsrzf 🇳🇿 909 72 129ms 3 Jul 2025 460th marshallward 🇺🇸 909 83 46ms 10 May 2022 461st ovs-code 🇩🇪 909 84 72ms 25 Sep 2022 461st GrayJoKing 🇦🇺 909 84 95ms 11 Aug 2023 461st edsrzf 🇳🇿 909 84 85ms 40 hours ago 464th Betuaredead 908 60 6ms 5 Jan 2023 464th Yewzir 🇧🇪 908 60 5ms 12 Feb 2023 464th Steffan153 🇫🇮 908 60 5ms 23 Feb 2023 464th DialFrost 🇸🇬 908 60 5ms 30 Jul 2024 464th GolfingSuccess 🇬🇷 908 60 5ms 16 Oct 2024 464th sean-niemann 🇺🇸 908 60 12ms 7 Mar 2025 470th DialFrost 🇸🇬 908 76 198ms 3 Aug 2025 471st m-tkach 🇺🇦 908 90 31ms 7 Dec 2023 472nd KrausRaus 🇺🇸 907 59 13ms 4 May 2022 472nd voytxt 🇨🇿 907 59 10ms 4 May 2022 472nd KingSkyrock 🇺🇸 907 59 10ms 18 May 2022 472nd ZakkkkAttackkkk 🇵🇭 907 59 10ms 14 Jul 2022 472nd aksyristos 907 59 10ms 28 Oct 2022 472nd nstearns96 🇬🇧 907 59 10ms 28 Nov 2022 472nd janbehrens 🇩🇪 907 59 10ms 17 May 2023 472nd Shanethegamer 🇺🇸 907 59 11ms 25 May 2023 472nd Maznek 907 59 10ms 26 Jun 2023 472nd SpiritAxolotl 🇺🇸 907 59 10ms 20 Mar 2024 472nd Andrey-Plotnikov 907 59 10ms 19 May 2024 472nd emgordon154 907 59 10ms 5 Aug 2024 472nd duckyluuk 🇳🇱 907 59 11ms 3 Oct 2024 472nd lifthrasiir 🇰🇷 907 59 13ms 23 Nov 2024 472nd fuzzylojik-golf 🇺🇸 907 59 10ms 1 Jun 2025 472nd acollett89 907 59 11ms 17 Jun 2025 472nd iczelia 🇩🇪 907 59 14ms 23 Sep 2025 489th edsrzf 🇳🇿 907 83 41ms 14 Jan 2025 489th kg583 🇺🇸 907 83 39ms 14 Feb 2025 491st nipzu 906 48 55ms 8 Sep 2024 492nd albanian-laundromat 906 55 795ms 22 Sep 2025 493rd Steffan153 🇫🇮 906 80 40ms 15 Nov 2022 493rd error256 906 80 130ms 8 Apr 2025 495th Shanethegamer 🇺🇸 906 82 19ms 19 Dec 2023 495th edsrzf 🇳🇿 906 82 19ms 6 Jan 2025 497th krcs 🇵🇱 906 86 325ms 10 May 2022 497th billings7 🇬🇧 906 86 411ms 15 May 2022 497th revlayle 🇺🇸 906 86 353ms 7 Dec 2022 497th Widgitty 906 86 356ms 1 Sep 2023 497th albanian-laundromat 906 86 319ms 30 Sep 2025 502nd shinh 905 52 42ms 29 Jun 2022 503rd Lydxn 🇨🇦 905 64 199ms 1 Apr 2023 504th Lydxn 🇨🇦 905 70 89ms 7 May 2022 505th MeWhenI 🇻🇦 905 71 102ms 20 Aug 2024 506th Shanethegamer 🇺🇸 904 72 4ms 4 May 2022 506th jared-hughes 904 72 4ms 4 May 2022 506th Waffle3z 904 72 7ms 5 May 2022 506th m-tkach 🇺🇦 904 72 104ms 16 Oct 2022 506th GrayJoKing 🇦🇺 904 72 104ms 22 Oct 2022 506th emplv 🇱🇻 904 72 104ms 27 Oct 2022 506th sean-niemann 🇺🇸 904 72 110ms 7 Mar 2025 506th Blendi-Goose 904 72 6ms 16 Mar 2025 506th edsrzf 🇳🇿 904 72 5ms 12 Apr 2025 506th sean-niemann 🇺🇸 904 72 6ms 16 Oct 2025 516th Steffan153 🇫🇮 903 82 44ms 1 Apr 2023 516th sean-niemann 🇺🇸 903 82 43ms 12 Jul 2024 518th stefangimmillaro 903 92 131ms 24 Oct 2023 518th inverseLorentz 🇦🇺 903 92 126ms 27 May 2024 518th sean-niemann 🇺🇸 903 92 124ms 8 Jun 2025 521st Lydxn 🇨🇦 902 69 7ms 12 Sep 2022 521st GrayJoKing 🇦🇺 902 69 7ms 12 Sep 2022 521st btnlq 902 69 7ms 24 Sep 2022 524th michael-pruglo 🇺🇦 902 94 54ms 5 Jul 2022 524th zygoloid 902 94 54ms 5 Aug 2024 First Prev 451–525 of 3,459 Next Last