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 Dragon Curve 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 Dragon Curve 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 237th Steffan153 🇫🇮 932 60 5ms 28 Jan 2024 237th JayXon 🇺🇸 932 60 4ms 29 Jan 2024 237th rucin93 🇵🇱 932 60 5ms 10 Jul 2024 237th sean-niemann 🇺🇸 932 60 5ms 10 Jul 2024 237th edsrzf 🇳🇿 932 60 5ms 9 Mar 2026 246th MeWhenI 🇻🇦 932 68 99ms 23 Feb 2023 246th JayXon 🇺🇸 932 68 101ms 4 Mar 2025 248th Lydxn 🇨🇦 931 70 109ms 17 Oct 2022 248th JayXon 🇺🇸 931 70 108ms 17 Oct 2022 250th Natanaelel 🇸🇪 929 28 177ms 22 Jul 2022 250th SirBogman 🇺🇸 929 28 182ms 17 Sep 2022 252nd sisyphus-ppcg 🇦🇺 929 50 2,565ms 31 Jan 2023 252nd saito-ta 🇯🇵 929 50 844ms 12 Dec 2024 254th JayXon 🇺🇸 929 57 155ms 19 Aug 2024 255th sisyphus-ppcg 🇦🇺 929 65 106ms 19 Dec 2025 255th ovs-code 🇩🇪 929 65 118ms 19 Dec 2025 257th Steffan153 🇫🇮 929 67 37ms 19 Aug 2024 257th JayXon 🇺🇸 929 67 37ms 19 Aug 2024 259th roavin 928 84 427ms 23 Jun 2022 259th tkr-sh 🇰🇵 928 84 457ms 20 Aug 2022 259th Nickmiste 928 84 443ms 9 Nov 2022 259th Matgc04 928 84 497ms 19 May 2023 259th postie77 928 84 410ms 19 May 2023 259th ertz1ertz 928 84 419ms 13 Sep 2024 259th Grabnukebomb 928 84 387ms 13 Sep 2024 259th Shanethegamer 🇺🇸 928 84 443ms 9 Apr 2025 259th HumanoidCPU 928 84 414ms 10 Apr 2025 259th annaproxy 928 84 443ms 11 Apr 2025 259th Re-Adventures 🇮🇳 928 84 401ms 15 Apr 2025 259th janbehrens 🇩🇪 928 84 404ms 17 Apr 2025 259th Flix7dev 🇧🇪 928 84 403ms 21 Oct 2025 272nd h3ra993huskp 🇯🇵 927 90 614ms 30 Nov 2025 273rd KasperKivimaeki 🇫🇮 927 104 358ms 10 Dec 2025 274th btnlq 925 59 5ms 6 Nov 2022 274th DialFrost 🇸🇬 925 59 5ms 23 Dec 2025 276th Lydxn 🇨🇦 925 90 123ms 6 May 2022 277th Bubbler-4 924 33 2,528ms 6 May 2022 277th rak1507 🇬🇧 924 33 108ms 8 May 2022 277th ngn 🇧🇬 924 33 25ms 11 May 2022 277th zacjl 924 33 32ms 3 Jun 2025 277th GrayJoKing 🇦🇺 924 33 13ms 4 Jun 2025 277th HPWiz 🇳🇿 924 33 9ms 16 Nov 2025 283rd nwellnhof 🇩🇪 924 51 39ms 4 May 2022 283rd primo-ppcg 🇹🇭 924 51 41ms 6 May 2022 283rd janlelis 924 51 40ms 10 May 2022 283rd Natanaelel 🇸🇪 924 51 42ms 2 Jun 2022 283rd blaztoma 🇱🇹 924 51 40ms 11 Mar 2026 288th MichalMarsalek 🇨🇿 924 71 141ms 5 May 2022 288th Lydxn 🇨🇦 924 71 142ms 7 May 2022 288th GrayJoKing 🇦🇺 924 71 131ms 8 May 2022 288th JayXon 🇺🇸 924 71 142ms 8 May 2022 288th Steffan153 🇫🇮 924 71 148ms 9 Mar 2023 288th Shanethegamer 🇺🇸 924 71 132ms 15 May 2023 288th MeWhenI 🇻🇦 924 71 157ms 8 Aug 2023 288th sean-niemann 🇺🇸 924 71 148ms 9 Jan 2025 296th 4QT0R 924 92 61ms 23 Nov 2023 296th ovs-code 🇩🇪 924 92 63ms 3 Jun 2024 298th uiamn 923 58 12ms 6 Sep 2022 298th 5quiwyrm 923 58 11ms 29 Sep 2022 298th alasdair-greenland 923 58 13ms 13 Jan 2023 298th kirjavascript 923 58 19ms 4 Aug 2025 298th Posandu 923 58 11ms 26 Aug 2025 298th mrxz 🇳🇱 923 58 11ms 3 Sep 2025 298th joakim-ronning 923 58 11ms 2 days ago 305th GrayJoKing 🇦🇺 923 74 4ms 23 Dec 2025 305th FlyingPenguin223 923 74 6ms 29 Dec 2025 305th jipsong 🇩🇪 923 74 6ms 19 hours ago 308th pardouin 🇫🇷 922 72 2,662ms 21 May 2025 309th Steffan153 🇫🇮 922 76 12ms 15 May 2023 309th primo-ppcg 🇹🇭 922 76 20ms 15 May 2023 309th Lydxn 🇨🇦 922 76 8ms 22 May 2023 309th GrayJoKing 🇦🇺 922 76 12ms 24 Aug 2023 309th kg583 🇺🇸 922 76 12ms 22 Feb 2026 314th xnor-gate 920 63 187ms 20 Jan 2025 315th Lydxn 🇨🇦 920 70 143ms 7 May 2022 315th JayXon 🇺🇸 920 70 143ms 7 May 2022 317th Steffan153 🇫🇮 920 79 24ms 19 Mar 2026 318th annaproxy 919 79 112ms 24 Aug 2022 318th GrayJoKing 🇦🇺 919 79 86ms 28 Aug 2022 318th JayXon 🇺🇸 919 79 560ms 5 Apr 2023 First Prev 241–320 of 3,777 Next Last