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 301st Steffan153 🇫🇮 917 71 107ms 14 Oct 2022 301st Shanethegamer 🇺🇸 917 71 106ms 15 Oct 2022 301st stefangimmillaro 917 71 106ms 16 Oct 2022 301st MeWhenI 🇻🇦 917 71 105ms 16 Oct 2022 301st Steffan153 🇫🇮 917 71 6ms 10 Dec 2022 301st synt7x 🇺🇸 917 71 4ms 7 Jul 2025 307th annaproxy 917 79 128ms 24 Aug 2022 307th GrayJoKing 🇦🇺 917 79 89ms 28 Aug 2022 307th JayXon 🇺🇸 917 79 554ms 5 Apr 2023 307th Lydxn 🇨🇦 917 79 585ms 9 Apr 2023 307th IanUtley 917 79 119ms 3 Nov 2023 307th Kacarott 🇦🇺 917 79 135ms 13 Jun 2024 313th Steffan153 🇫🇮 917 81 26ms 11 Dec 2023 314th arctouch-cristiannevianna 916 85 366ms 3 Apr 2023 314th tomtheisen 🇺🇸 916 85 340ms 10 Apr 2025 316th Shanethegamer 🇺🇸 916 87 390ms 15 May 2023 316th JayXon 🇺🇸 916 87 508ms 15 May 2023 316th Steffan153 🇫🇮 916 87 389ms 16 May 2023 316th Lydxn 🇨🇦 916 87 465ms 16 May 2023 316th GrayJoKing 🇦🇺 916 87 400ms 11 Aug 2023 316th sean-niemann 🇺🇸 916 87 458ms 11 Jul 2024 322nd Natanaelel 🇸🇪 915 57 474ms 17 Jan 2024 322nd Kacarott 🇦🇺 915 57 425ms 10 Sep 2024 324th Shanethegamer 🇺🇸 915 61 4ms 9 Oct 2023 324th edsrzf 🇳🇿 915 61 4ms 4 Jul 2025 326th ovs-code 🇩🇪 915 75 74ms 12 Sep 2024 326th Kacarott 🇦🇺 915 75 78ms 13 Sep 2024 328th Lydxn 🇨🇦 914 81 45ms 1 Apr 2023 329th lynn 913 78 1,328ms 5 May 2022 330th andersk 🇺🇸 913 91 120ms 25 Oct 2022 330th Super-Pizza 🇨🇦 913 91 127ms 4 Dec 2022 330th klixel 🇨🇦 913 91 121ms 20 May 2023 330th lynn 913 91 127ms 6 Jul 2024 330th edsrzf 🇳🇿 913 91 124ms 29 Nov 2024 330th DialFrost 🇸🇬 913 91 122ms 7 Apr 2025 336th tailorspy 912 93 53ms 27 May 2024 336th sean-niemann 🇺🇸 912 93 54ms 9 Jun 2025 336th KasperKivimaeki 🇫🇮 912 93 54ms 20 days ago 339th nai62 911 69 7ms 27 Aug 2022 340th GrayJoKing 🇦🇺 911 71 289ms 10 Aug 2023 341st GolfingSuccess 🇬🇷 910 64 86ms 14 Dec 2024 341st MeWhenI 🇻🇦 910 64 92ms 24 Dec 2024 343rd Shanethegamer 🇺🇸 910 77 14ms 15 May 2023 344th primo-ppcg 🇹🇭 910 93 42ms 7 May 2022 344th AlephSquirrel 910 93 30ms 21 Jan 2023 344th kg583 🇺🇸 910 93 29ms 26 Dec 2024 344th CLOStrophobic 🇮🇹 910 93 31ms 17 Jan 2025 344th edsrzf 🇳🇿 910 93 30ms 3 Jul 2025 349th MeWhenI 🇻🇦 909 63 206ms 5 May 2022 350th Lydxn 🇨🇦 909 68 437ms 5 May 2022 350th GrayJoKing 🇦🇺 909 68 15ms 15 Nov 2022 350th Bubbler-4 909 68 16ms 15 Nov 2022 350th Rubiksmath 909 68 15ms 14 Aug 2023 354th edsrzf 🇳🇿 909 72 129ms 3 Jul 2025 355th marshallward 🇺🇸 909 83 46ms 10 May 2022 356th ovs-code 🇩🇪 909 84 65ms 25 Sep 2022 356th GrayJoKing 🇦🇺 909 84 65ms 11 Aug 2023 356th edsrzf 🇳🇿 909 84 80ms 4 days ago 359th Betuaredead 908 60 6ms 5 Jan 2023 359th Yewzir 🇧🇪 908 60 5ms 12 Feb 2023 359th Steffan153 🇫🇮 908 60 5ms 23 Feb 2023 359th DialFrost 🇸🇬 908 60 5ms 30 Jul 2024 359th GolfingSuccess 🇬🇷 908 60 5ms 16 Oct 2024 359th sean-niemann 🇺🇸 908 60 12ms 7 Mar 2025 365th DialFrost 🇸🇬 908 76 198ms 3 Aug 2025 366th m-tkach 🇺🇦 908 90 31ms 7 Dec 2023 367th KrausRaus 🇺🇸 907 59 13ms 4 May 2022 367th voytxt 🇨🇿 907 59 10ms 4 May 2022 367th KingSkyrock 🇺🇸 907 59 10ms 18 May 2022 367th ZakkkkAttackkkk 🇵🇭 907 59 10ms 14 Jul 2022 367th aksyristos 907 59 10ms 28 Oct 2022 367th nstearns96 🇬🇧 907 59 10ms 28 Nov 2022 367th janbehrens 🇩🇪 907 59 10ms 17 May 2023 367th Shanethegamer 🇺🇸 907 59 11ms 25 May 2023 367th Maznek 907 59 10ms 26 Jun 2023 First Prev 301–375 of 3,469 Next Last