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 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 Chars Time Submitted 555th JunkIce 887 63 25ms 24 Nov 2024 555th Kowalskiexe 🇵🇱 887 63 21ms 19 Apr 2025 555th 123mjb 887 63 24ms 2 Jun 2025 555th DrakeSeteraO 887 63 63ms 24 Oct 2025 555th enigma 887 63 38ms 21 Dec 2025 555th ASampsonMu31 887 63 52ms 26 days ago 567th jared-hughes 887 130 22ms 15 Dec 2024 568th lynn 886 65 267ms 5 May 2022 568th GrayJoKing 🇦🇺 886 65 250ms 5 May 2022 568th Sakisan 🇧🇪 886 65 178ms 6 May 2022 568th JayXon 🇺🇸 886 65 271ms 17 Oct 2022 568th Steffan153 🇫🇮 886 65 181ms 12 Nov 2022 568th tobeannouncd 886 65 302ms 25 Apr 2025 568th sean-niemann 🇺🇸 886 65 168ms 9 Jun 2025 575th stefangimmillaro 886 71 100ms 2 Oct 2022 575th Steffan153 🇫🇮 886 71 100ms 23 Feb 2023 575th Shanethegamer 🇺🇸 886 71 98ms 16 May 2023 575th sean-niemann 🇺🇸 886 71 96ms 12 Jul 2024 579th Shanethegamer 🇺🇸 886 72 145ms 8 May 2025 579th edsrzf 🇳🇿 886 72 144ms 4 Jul 2025 579th Yewzir 🇧🇪 886 72 134ms 20 Nov 2025 582nd DialFrost 🇸🇬 886 95 30ms 10 Dec 2024 582nd snoozingnewt 🇨🇦 886 95 112ms 4 Dec 2025 582nd Steffan153 🇫🇮 886 95 111ms 27 Feb 2026 585th canissimia 🇦🇶 886 110 2,640ms 20 Feb 2023 586th Steffan153 🇫🇮 885 52 7ms 31 Dec 2022 586th blaztoma 🇱🇹 885 52 8ms 18 Jan 2026 588th GrayJoKing 🇦🇺 885 77 76ms 13 Sep 2024 589th frankgraziano 884 75 16ms 23 Feb 2026 590th albanian-laundromat 🇺🇸 884 94 486ms 24 Sep 2025 590th jkelly467 884 94 401ms 23 Oct 2025 590th HumanoidCPU 884 94 479ms 8 Nov 2025 593rd m-tkach 🇺🇦 883 112 119ms 22 Jun 2025 594th primo-ppcg 🇹🇭 882 52 219ms 5 May 2022 594th dvargas46 🇺🇸 882 52 87ms 22 Dec 2022 596th GrayJoKing 🇦🇺 882 70 2ms 6 May 2022 596th ovs-code 🇩🇪 882 70 2ms 8 Oct 2023 596th 09cf 882 70 2ms 8 Oct 2023 596th saito-ta 🇯🇵 882 70 2ms 21 Dec 2023 596th sean-niemann 🇺🇸 882 70 2ms 10 Jul 2024 596th KasperKivimaeki 🇫🇮 882 70 6ms 8 Aug 2025 602nd primo-ppcg 🇹🇭 882 85 39ms 14 Jan 2025 602nd MeWhenI 🇻🇦 882 85 41ms 21 Apr 2025 604th SiestaGuru 882 88 371ms 9 Jan 2023 604th rifatx 882 88 376ms 5 Jul 2024 604th kmathis22 882 88 371ms 25 Sep 2025 607th nipzu 882 94 126ms 17 May 2022 607th Natanaelel 🇸🇪 882 94 126ms 17 Jun 2022 607th nkoppel 882 94 122ms 19 Oct 2022 607th ovs-code 🇩🇪 882 94 126ms 21 Jun 2023 607th mousetail 🇳🇱 882 94 126ms 12 Jan 2024 612th Irratix 🇳🇱 882 96 62ms 4 May 2022 612th MeWhenI 🇻🇦 882 96 59ms 1 Jun 2022 612th janbehrens 🇩🇪 882 96 61ms 21 Apr 2023 612th Shanethegamer 🇺🇸 882 96 58ms 15 May 2023 612th Yewzir 🇧🇪 882 96 72ms 11 Nov 2023 612th MateuszPietrzak 🇵🇱 882 96 60ms 18 Nov 2023 612th kkoenig 882 96 62ms 21 Dec 2023 612th BlankSpruce 882 96 62ms 20 Aug 2024 612th fuzzylojik-golf 🇺🇸 882 96 60ms 14 Jun 2025 612th dokutan 882 96 60ms 8 Feb 2026 622nd frosster 🇨🇦 881 77 5ms 8 Feb 2026 623rd ovs-code 🇩🇪 881 89 458ms 24 Jul 2024 623rd jipsong 🇩🇪 881 89 450ms 7 Apr 2025 623rd DialFrost 🇸🇬 881 89 485ms 24 Dec 2025 626th sisyphus-ppcg 🇦🇺 880 40 387ms 31 Jan 2023 626th sean-niemann 🇺🇸 880 40 385ms 8 Mar 2025 628th canissimia 🇦🇶 880 50 42ms 5 May 2022 628th ovs-code 🇩🇪 880 50 223ms 7 May 2022 628th sisyphus-ppcg 🇦🇺 880 50 42ms 20 Feb 2023 628th sean-niemann 🇺🇸 880 50 44ms 9 Jun 2025 628th pardouin 🇫🇷 880 50 40ms 22 Aug 2025 633rd ovs-code 🇩🇪 880 73 340ms 22 Jul 2023 634th sean-niemann 🇺🇸 880 108 335ms 25 May 2024 634th GolfingSuccess 🇬🇷 880 108 340ms 6 Sep 2025 634th edsrzf 🇳🇿 880 108 330ms 3 days ago 637th primo-ppcg 🇹🇭 880 193 107ms 14 Aug 2025 638th GrayJoKing 🇦🇺 879 72 433ms 31 May 2022 638th Shanethegamer 🇺🇸 879 72 437ms 1 Jun 2022 638th Steffan153 🇫🇮 879 72 442ms 10 Dec 2022 First Prev 561–640 of 3,648 Next Last