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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 Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Nim 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 Nim 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 501st MichalMarsalek 🇨🇿 893 87 443ms 5 May 2022 501st Kloppermand 🇩🇰 893 87 436ms 7 Oct 2022 501st bwat2 893 87 464ms 6 Apr 2023 501st bpharaldsson 893 87 397ms 9 Feb 2026 505th Ripick 892 73 136ms 8 May 2023 506th edsrzf 🇳🇿 892 78 17ms 16 Aug 2025 507th dokutan 892 88 425ms 15 Feb 2026 508th GolfingSuccess 🇬🇷 892 95 61ms 5 May 2022 508th Alex-x90 🇺🇸 892 95 64ms 4 Dec 2022 508th Mandrzejy 🇵🇱 892 95 59ms 22 Mar 2024 508th roupiq 🇵🇱 892 95 61ms 7 days ago 512th p-zubieta 891 48 295ms 6 Mar 2024 513th JayXon 🇺🇸 891 74 2,567ms 3 days ago 514th Steffan153 🇫🇮 891 80 28ms 15 Nov 2022 514th error256 891 80 117ms 8 Apr 2025 516th oeb25 891 93 129ms 16 May 2022 516th snobee 🇨🇦 891 93 130ms 8 Dec 2022 516th logvp 891 93 127ms 2 Jan 2024 516th smartiel 891 93 128ms 12 Aug 2024 516th trist224 🇫🇷 891 93 125ms 12 Aug 2024 516th nullie 891 93 134ms 19 Dec 2024 516th lolgeny 891 93 135ms 22 Feb 2025 523rd canissimia 🇦🇶 890 110 3,055ms 20 Feb 2023 524th jared-hughes 890 130 22ms 15 Dec 2024 525th canissimia 🇦🇶 890 204 16ms 25 Nov 2023 526th KatieLG 🇬🇧 889 60 11ms 4 May 2022 526th ScottHamper 889 60 13ms 5 May 2022 526th Re-Adventures 🇮🇳 889 60 13ms 5 May 2022 526th 0x24a537r9 889 60 13ms 29 Jul 2022 526th stefangabos 🇷🇴 889 60 12ms 19 Aug 2022 526th eranws 889 60 11ms 10 Sep 2022 526th GeorgeStechman 🇬🇧 889 60 12ms 26 Sep 2022 526th BloodStormKnight 889 60 15ms 15 Oct 2022 526th dzshn 889 60 14ms 3 Dec 2022 526th biocommando 🇫🇮 889 60 14ms 20 Dec 2022 526th Betuaredead 889 60 12ms 5 Jan 2023 526th piano-miles 889 60 10ms 16 Jan 2023 526th Yewzir 🇧🇪 889 60 12ms 12 Feb 2023 526th shellbertt 🇨🇦 889 60 12ms 26 Feb 2023 526th zakariamouhid 889 60 12ms 20 May 2023 526th raphaelimahorn 889 60 11ms 23 Aug 2023 526th jbt 889 60 11ms 25 Dec 2023 526th olleicua 🇺🇸 889 60 12ms 15 Feb 2024 526th HumanoidCPU 889 60 14ms 3 May 2024 526th dokutan 889 60 11ms 13 Aug 2024 526th LostSyntax21 🇬🇧 889 60 12ms 10 Sep 2024 526th xyangst 889 60 14ms 28 Sep 2024 526th a6166231 🇨🇳 889 60 12ms 15 May 2025 526th SebassNoob 889 60 14ms 5 Aug 2025 526th levinwinter 889 60 14ms 22 Oct 2025 526th Cube14yt 889 60 11ms 16 Nov 2025 526th gigaprofisi 🇺🇸 889 60 10ms 17 Nov 2025 526th amazingalek 🇳🇴 889 60 12ms 20 Dec 2025 526th shandriy 889 60 12ms 23 Jan 2026 526th spidunno 889 60 11ms 17 Feb 2026 556th Lydxn 🇨🇦 889 107 322ms 6 May 2022 556th CaedenHarper 🇨🇦 889 107 346ms 5 Oct 2025 558th Shanethegamer 🇺🇸 888 61 4ms 31 Oct 2022 558th MeWhenI 🇻🇦 888 61 4ms 4 Nov 2022 560th P-Quentin 🇫🇷 888 63 21ms 3 Aug 2022 560th kaptsanovb 888 63 29ms 20 Apr 2023 560th fkantelberg 888 63 20ms 14 Jul 2023 560th VictorStenvers 🇳🇱 888 63 27ms 13 Nov 2023 560th 1231234md5 🇨🇳 888 63 21ms 14 Dec 2023 560th f-tucker 888 63 24ms 6 Feb 2024 560th JunkIce 888 63 25ms 24 Nov 2024 560th Kowalskiexe 🇵🇱 888 63 21ms 19 Apr 2025 560th 123mjb 888 63 24ms 2 Jun 2025 560th DrakeSeteraO 888 63 63ms 24 Oct 2025 560th enigma 888 63 38ms 21 Dec 2025 560th ASampsonMu31 888 63 52ms 13 Mar 2026 560th cuvam 🇺🇸 888 63 52ms 4 days ago 573rd Shanethegamer 🇺🇸 888 72 145ms 8 May 2025 573rd edsrzf 🇳🇿 888 72 144ms 4 Jul 2025 573rd Yewzir 🇧🇪 888 72 134ms 20 Nov 2025 576th snoozingnewt 🇨🇦 888 95 112ms 4 Dec 2025 576th Steffan153 🇫🇮 888 95 111ms 27 Feb 2026 578th lynn 887 65 267ms 5 May 2022 578th GrayJoKing 🇦🇺 887 65 250ms 5 May 2022 578th Sakisan 🇧🇪 887 65 178ms 6 May 2022 578th JayXon 🇺🇸 887 65 271ms 17 Oct 2022 578th Steffan153 🇫🇮 887 65 181ms 12 Nov 2022 578th tobeannouncd 887 65 302ms 25 Apr 2025 578th sean-niemann 🇺🇸 887 65 168ms 9 Jun 2025 585th DialFrost 🇸🇬 887 95 30ms 10 Dec 2024 586th m-tkach 🇺🇦 887 112 116ms 22 Jun 2025 587th stefangimmillaro 886 71 95ms 2 Oct 2022 587th Steffan153 🇫🇮 886 71 106ms 23 Feb 2023 587th Shanethegamer 🇺🇸 886 71 101ms 16 May 2023 587th sean-niemann 🇺🇸 886 71 100ms 12 Jul 2024 591st frankgraziano 886 75 18ms 23 Feb 2026 592nd GrayJoKing 🇦🇺 886 77 76ms 13 Sep 2024 593rd Steffan153 🇫🇮 885 52 7ms 31 Dec 2022 593rd blaztoma 🇱🇹 885 52 8ms 18 Jan 2026 595th albanian-laundromat 🇺🇸 884 94 455ms 24 Sep 2025 595th jkelly467 884 94 481ms 23 Oct 2025 595th HumanoidCPU 884 94 507ms 8 Nov 2025 598th primo-ppcg 🇹🇭 883 52 219ms 5 May 2022 598th dvargas46 🇺🇸 883 52 87ms 22 Dec 2022 600th GrayJoKing 🇦🇺 883 70 2ms 6 May 2022 First Prev 501–600 of 3,753 Next Last