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 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 United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Trinomial Triangle 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 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 United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Bytes Time 373rd kirjavascript 922 58 4 Aug 2025 373rd Posandu 922 58 26 Aug 2025 373rd mrxz 🇳🇱 922 58 21 days ago 379th MichalMarsalek 🇨🇿 921 71 5 May 2022 379th Lydxn 🇨🇦 921 71 7 May 2022 379th GrayJoKing 🇦🇺 921 71 8 May 2022 379th JayXon 🇺🇸 921 71 8 May 2022 379th Steffan153 🇫🇮 921 71 9 Mar 2023 379th Shanethegamer 🇺🇸 921 71 15 May 2023 379th MeWhenI 🇻🇦 921 71 8 Aug 2023 379th sean-niemann 🇺🇸 921 71 9 Jan 2025 387th Herbert00709 🇵🇱 921 92 17 Nov 2023 387th 4QT0R 921 92 23 Nov 2023 387th ovs-code 🇩🇪 921 92 3 Jun 2024 390th edsrzf 🇳🇿 920 54 11 days ago 391st Steffan153 🇫🇮 920 76 15 May 2023 391st primo-ppcg 🇹🇭 920 76 15 May 2023 391st Lydxn 🇨🇦 920 76 22 May 2023 391st GrayJoKing 🇦🇺 920 76 24 Aug 2023 395th xnor-gate 919 63 20 Jan 2025 396th primo-ppcg 🇹🇭 917 61 6 May 2022 396th sisyphus-ppcg 🇦🇺 917 61 14 Jul 2022 398th Lydxn 🇨🇦 917 70 7 May 2022 398th JayXon 🇺🇸 917 70 7 May 2022 400th Steffan153 🇫🇮 916 71 14 Oct 2022 400th Shanethegamer 🇺🇸 916 71 15 Oct 2022 400th stefangimmillaro 916 71 16 Oct 2022 400th MeWhenI 🇻🇦 916 71 16 Oct 2022 400th Steffan153 🇫🇮 916 71 10 Dec 2022 400th synt7x 🇺🇸 916 71 7 Jul 2025 406th annaproxy 916 79 24 Aug 2022 406th GrayJoKing 🇦🇺 916 79 28 Aug 2022 406th IanUtley 916 79 3 Nov 2023 406th Kacarott 🇦🇺 916 79 13 Jun 2024 410th arctouch-cristiannevianna 916 85 3 Apr 2023 410th tomtheisen 🇺🇸 916 85 10 Apr 2025 412th sean-niemann 🇺🇸 916 109 25 May 2024 412th CaedenHarper 🇨🇦 916 109 28 Jan 2025 412th GolfingSuccess 🇬🇷 916 109 17 days ago 415th Shanethegamer 🇺🇸 915 61 9 Oct 2023 415th edsrzf 🇳🇿 915 61 4 Jul 2025 417th JayXon 🇺🇸 915 79 5 Apr 2023 417th Lydxn 🇨🇦 915 79 9 Apr 2023 419th Natanaelel 🇸🇪 914 57 17 Jan 2024 419th Kacarott 🇦🇺 914 57 10 Sep 2024 421st pardouin 🇫🇷 914 72 21 May 2025 422nd Steffan153 🇫🇮 914 81 11 Dec 2023 423rd Shanethegamer 🇺🇸 914 87 15 May 2023 423rd JayXon 🇺🇸 914 87 15 May 2023 423rd Steffan153 🇫🇮 914 87 16 May 2023 423rd Lydxn 🇨🇦 914 87 16 May 2023 423rd GrayJoKing 🇦🇺 914 87 11 Aug 2023 423rd sean-niemann 🇺🇸 914 87 11 Jul 2024 429th AdamHe17 913 73 31 May 2022 429th AliceFord 913 73 2 Jun 2022 429th Natanaelel 🇸🇪 913 73 16 Jun 2022 429th btjones0 913 73 21 Jun 2022 429th marcin7Cd 913 73 27 Jun 2022 429th tri1212 🇻🇳 913 73 18 Jul 2022 429th vhoulbreque 🇫🇷 913 73 18 Aug 2022 429th KatieLG 🇬🇧 913 73 29 Aug 2022 429th tkr-sh 🇫🇷 913 73 8 Sep 2022 429th jroscoe5 913 73 15 Sep 2022 429th fredrik-bakke 🇳🇴 913 73 18 Sep 2022 429th firegene 🇮🇪 913 73 27 Sep 2022 429th OhmNomNom 913 73 7 Oct 2022 429th 0-4849 913 73 1 Nov 2022 429th M0PKOBKA 913 73 19 Dec 2022 429th calumacutt 913 73 19 Dec 2022 429th thehylian 913 73 2 Jan 2023 429th fynnkroeger 913 73 6 Jan 2023 429th shellbertt 🇨🇦 913 73 13 Jan 2023 429th hunt-g 913 73 4 Feb 2023 429th ljweel 913 73 13 Feb 2023 429th jmerle 🇳🇱 913 73 16 Feb 2023 Prev 376–450 of 3,339 Next
