Collatz in all languages in bytes. Achievements Cheevos Holes Languages Medals Miscellaneous 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang 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 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Multitap Input 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 Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 478th dokutan 898 89 425ms 8 Feb 2026 482nd DialFrost 🇸🇬 897 29 175ms 15 Mar 2025 483rd JayXon 🇺🇸 897 74 2,363ms 14 Nov 2024 484th error256 897 81 18ms 19 Mar 2026 485th nwellnhof 🇩🇪 896 69 24ms 4 May 2022 485th m-tkach 🇺🇦 896 69 18ms 4 May 2022 485th GolfingSuccess 🇬🇷 896 69 19ms 5 May 2022 485th jared-hughes 896 69 18ms 5 May 2022 485th ovs-code 🇩🇪 896 69 26ms 5 May 2022 485th btnlq 896 69 17ms 5 May 2022 485th sisyphus-ppcg 🇦🇺 896 69 15ms 6 May 2022 485th lynn 896 69 17ms 22 Aug 2022 485th Steffan153 🇫🇮 896 69 17ms 15 Nov 2022 485th AlexanderFair 896 69 24ms 19 Jul 2023 485th pardouin 🇫🇷 896 69 18ms 11 Nov 2023 485th AlephSquirrel 896 69 448ms 30 Dec 2023 485th kg583 🇺🇸 896 69 24ms 28 Jan 2024 485th davecame 896 69 24ms 20 Aug 2024 485th zacjl 896 69 18ms 19 Sep 2024 485th starfihs 896 69 17ms 12 Oct 2024 485th kops-cg 896 69 24ms 9 Feb 2025 485th sean-niemann 🇺🇸 896 69 18ms 7 Mar 2025 485th plcc0 896 69 16ms 26 Mar 2025 485th yujh-yujh 🇬🇸 896 69 24ms 28 Mar 2025 485th moustave 896 69 17ms 10 Jun 2025 485th 4atj 896 69 3,516ms 30 Jun 2025 485th dirckvdende 896 69 17ms 11 Jul 2025 485th xnor-gate 896 69 17ms 19 Aug 2025 485th BrunoVisnadi 🇧🇷 896 69 25ms 1 Oct 2025 485th Mukundan314 896 69 18ms 13 Nov 2025 485th bizy-coder 896 69 16ms 21 Nov 2025 485th duckyluuk 🇳🇱 896 69 19ms 4 Dec 2025 485th bricknellj 896 69 17ms 4 Dec 2025 485th Seek64 🇩🇪 896 69 17ms 26 Dec 2025 485th jusaka 896 69 16ms 10 days ago 485th CaedenHarper 🇨🇦 896 69 17ms 8 days ago 517th MichalMarsalek 🇨🇿 896 87 439ms 5 May 2022 517th Kloppermand 🇩🇰 896 87 445ms 7 Oct 2022 517th bwat2 896 87 385ms 6 Apr 2023 517th bpharaldsson 896 87 442ms 9 Feb 2026 521st Shanethegamer 🇺🇸 895 61 4ms 31 Oct 2022 521st MeWhenI 🇻🇦 895 61 4ms 4 Nov 2022 523rd oeb25 895 93 129ms 16 May 2022 523rd snobee 🇨🇦 895 93 130ms 8 Dec 2022 523rd logvp 895 93 127ms 2 Jan 2024 523rd smartiel 895 93 128ms 12 Aug 2024 523rd trist224 🇫🇷 895 93 125ms 12 Aug 2024 523rd nullie 895 93 134ms 19 Dec 2024 523rd lolgeny 895 93 137ms 22 Feb 2025 530th Steffan153 🇫🇮 894 52 7ms 31 Dec 2022 530th blaztoma 🇱🇹 894 52 8ms 18 Jan 2026 532nd Yewzir 🇧🇪 894 72 134ms 20 Nov 2025 533rd frankgraziano 894 75 17ms 23 Feb 2026 534th GolfingSuccess 🇬🇷 894 95 62ms 5 May 2022 534th Alex-x90 🇺🇸 894 95 64ms 4 Dec 2022 534th Mandrzejy 🇵🇱 894 95 59ms 22 Mar 2024 534th roupiq 🇵🇱 894 95 62ms 2 days ago 538th snoozingnewt 🇨🇦 894 96 112ms 4 Dec 2025 538th Steffan153 🇫🇮 894 96 111ms 27 Feb 2026 540th stefangimmillaro 893 71 95ms 2 Oct 2022 540th Steffan153 🇫🇮 893 71 106ms 23 Feb 2023 540th Shanethegamer 🇺🇸 893 71 101ms 16 May 2023 540th sean-niemann 🇺🇸 893 71 100ms 12 Jul 2024 544th Lydxn 🇨🇦 893 108 322ms 6 May 2022 544th CaedenHarper 🇨🇦 893 108 346ms 5 Oct 2025 546th canissimia 🇦🇶 893 110 2,640ms 20 Feb 2023 547th jared-hughes 893 130 22ms 15 Dec 2024 548th primo-ppcg 🇹🇭 892 52 219ms 5 May 2022 548th dvargas46 🇺🇸 892 52 87ms 22 Dec 2022 550th KatieLG 🇬🇧 892 60 13ms 4 May 2022 550th ScottHamper 892 60 14ms 5 May 2022 550th Re-Adventures 🇮🇳 892 60 13ms 5 May 2022 550th 0x24a537r9 892 60 11ms 29 Jul 2022 550th stefangabos 🇷🇴 892 60 14ms 19 Aug 2022 550th eranws 892 60 13ms 10 Sep 2022 550th GeorgeStechman 🇬🇧 892 60 13ms 26 Sep 2022 550th BloodStormKnight 892 60 11ms 15 Oct 2022 550th dzshn 892 60 12ms 3 Dec 2022 550th biocommando 🇫🇮 892 60 10ms 20 Dec 2022 550th Betuaredead 892 60 11ms 5 Jan 2023 First Prev 481–560 of 3,761 Next Last
