Collatz in all languages in chars. 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 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 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 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel 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 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel 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 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 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 601st Irratix 🇳🇱 881 96 53ms 4 May 2022 601st MeWhenI 🇻🇦 881 96 52ms 1 Jun 2022 601st janbehrens 🇩🇪 881 96 57ms 21 Apr 2023 601st Shanethegamer 🇺🇸 881 96 54ms 15 May 2023 601st Yewzir 🇧🇪 881 96 58ms 11 Nov 2023 601st MateuszPietrzak 🇵🇱 881 96 55ms 18 Nov 2023 601st kkoenig 881 96 53ms 21 Dec 2023 601st BlankSpruce 881 96 56ms 20 Aug 2024 601st fuzzylojik-golf 🇺🇸 881 96 57ms 14 Jun 2025 610th m-tkach 🇺🇦 881 112 118ms 22 Jun 2025 611th sisyphus-ppcg 🇦🇺 880 40 383ms 31 Jan 2023 611th sean-niemann 🇺🇸 880 40 507ms 8 Mar 2025 613th ovs-code 🇩🇪 880 73 340ms 22 Jul 2023 614th sean-niemann 🇺🇸 880 108 274ms 25 May 2024 614th GolfingSuccess 🇬🇷 880 108 273ms 6 Sep 2025 616th GrayJoKing 🇦🇺 879 72 426ms 31 May 2022 616th Shanethegamer 🇺🇸 879 72 411ms 1 Jun 2022 616th Steffan153 🇫🇮 879 72 413ms 10 Dec 2022 619th Shanethegamer 🇺🇸 879 81 17ms 19 Dec 2023 619th emgordon154 879 81 31ms 29 Jul 2025 621st steffan-polygolf 878 74 136ms 14 Feb 2024 622nd primo-ppcg 🇹🇭 878 193 107ms 14 Aug 2025 623rd Shanethegamer 🇺🇸 877 142 511ms 27 Mar 2025 623rd DialFrost 🇸🇬 877 142 490ms 28 Mar 2025 623rd emgordon154 877 142 395ms 10 Apr 2025 623rd GolfingSuccess 🇬🇷 877 142 463ms 10 days ago 627th mousetail 🇳🇱 876 40 66ms 29 Aug 2025 628th GrayJoKing 🇦🇺 876 84 37ms 19 Jun 2022 628th primo-ppcg 🇹🇭 876 84 36ms 29 Jun 2022 630th Shanethegamer 🇺🇸 875 51 428ms 15 May 2023 631st Grrisly 875 74 4ms 25 Mar 2024 632nd JayXon 🇺🇸 875 157 1,772ms 14 Sep 2025 633rd rucin93 🇵🇱 874 57 136ms 4 Aug 2024 633rd dokutan 874 57 129ms 9 Aug 2024 635th c0d3-4-F00d 🇩🇪 874 61 10ms 6 May 2022 635th jackkav 874 61 10ms 26 Jun 2022 635th TechNolaByte 874 61 10ms 6 Jul 2022 635th Heathcorp 🇦🇺 874 61 9ms 17 Jul 2022 635th C0de5mith 🇺🇸 874 61 11ms 3 Aug 2022 635th sebipopa 🇷🇴 874 61 10ms 18 Aug 2022 635th moikaturns 🇬🇧 874 61 9ms 25 Sep 2022 635th FlorianCassayre 🇫🇷 874 61 10ms 27 Sep 2022 635th Mazn3k 874 61 10ms 1 Feb 2023 635th tvcv901 874 61 10ms 22 Mar 2023 635th unfinishedprogram 874 61 10ms 19 Jul 2023 635th snoozingnewt 🇨🇦 874 61 10ms 23 Sep 2023 635th funnyboy-roks 874 61 10ms 9 May 2024 635th bac0id 874 61 10ms 29 Jun 2024 635th madex 🇩🇪 874 61 10ms 9 Jul 2024 635th FortuiteMan 🇫🇷 874 61 9ms 10 Oct 2024 635th RobertHoeh 874 61 13ms 5 Apr 2025 635th LvLError 874 61 10ms 29 May 2025 635th miles-evan 874 61 10ms 5 Aug 2025 635th alexsave 874 61 10ms 13 Oct 2025 655th dokutan 873 62 5ms 28 Apr 2025 656th NerdyMcNerd42 873 64 19ms 26 Oct 2022 656th tpasfieldERAU 873 64 23ms 14 Nov 2022 656th CheeseCake628 🇳🇴 873 64 22ms 6 Jan 2023 656th adamnielson42 🇺🇸 873 64 19ms 25 Apr 2023 656th nathsou 🇫🇷 873 64 19ms 2 Sep 2023 656th zwxzwxzwx21 873 64 25ms 30 Jan 2024 656th steffan-polygolf 873 64 19ms 8 Mar 2024 656th Jacob385 873 64 57ms 4 Apr 2024 656th gallium-gonzollium 873 64 28ms 26 Aug 2024 665th Shanethegamer 🇺🇸 873 66 172ms 4 May 2022 665th scpchicken 🇵🇼 873 66 254ms 5 May 2022 665th sisyphus-ppcg 🇦🇺 873 66 174ms 6 May 2022 665th Natanaelel 🇸🇪 873 66 144ms 15 Jun 2022 665th Z-snails 873 66 254ms 27 Feb 2023 665th Jeremy-Stafford 873 66 258ms 27 Feb 2023 665th alomiF 873 66 293ms 1 Sep 2023 665th btnlq 873 66 145ms 17 Oct 2023 673rd johnnythedoggie 873 72 91ms 13 May 2022 673rd kaascevich 873 72 90ms 8 Jul 2025 675th DialFrost 🇸🇬 873 73 83ms 3 Jun 2025 First Prev 601–675 of 3,499 Next Last