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 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 Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers 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 ><> ALGOL 68 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 ArkScript 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 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 ArkScript 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 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 Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers 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 880th AlephSquirrel 846 26 151ms 6 Jan 2023 880th ovs-code 🇩🇪 846 26 373ms 5 May 2024 880th saito-ta 🇯🇵 846 26 150ms 12 Dec 2024 884th randolchance 846 63 11ms 8 Jan 2023 884th CatsAreFluffy 846 63 11ms 18 Feb 2023 884th amiralitaheri 846 63 11ms 23 Feb 2023 884th RuyiLi 846 63 12ms 1 Apr 2023 884th TaserTheFox 🇺🇸 846 63 12ms 25 May 2023 884th pfysches-boop 846 63 11ms 6 Aug 2023 884th mhgockel 846 63 14ms 19 Aug 2023 884th NickTheEASDude 🇺🇸 846 63 11ms 18 Jan 2024 884th 823126 846 63 12ms 14 Nov 2024 884th Palladium02 846 63 10ms 12 May 2025 884th 4very 846 63 13ms 10 Jun 2025 884th Ultra814 846 63 10ms 21 Aug 2025 896th NewDefectus 🇮🇱 846 73 3ms 6 May 2022 896th inventshah 846 73 2ms 12 Jun 2022 896th Natanaelel 🇸🇪 846 73 2ms 15 Jun 2022 896th Herbert00709 🇵🇱 846 73 2ms 22 Dec 2023 896th LorenzoDeGaspari 846 73 2ms 27 May 2024 896th Bpc-CPU 846 73 2ms 12 Jul 2025 896th AZTECCO 846 73 2ms 16 Sep 2025 896th CaedenHarper 🇨🇦 846 73 2ms 28 Sep 2025 896th prestosilver 🇺🇸 846 73 2ms 3 Dec 2025 896th albanian-laundromat 846 73 3ms 20 Jan 2026 906th Shanethegamer 🇺🇸 846 98 133ms 26 Oct 2022 906th emgordon154 846 98 122ms 18 Feb 2025 908th Natanaelel 🇸🇪 845 57 459ms 17 Jan 2024 908th Kacarott 🇦🇺 845 57 402ms 10 Sep 2024 908th albanian-laundromat 845 57 526ms 7 Oct 2025 911th retrohun 845 64 4ms 6 Nov 2022 911th Re-Adventures 🇮🇳 845 64 4ms 7 Nov 2022 911th stellartux 845 64 4ms 26 Dec 2023 911th bac0id 845 64 4ms 29 Jun 2024 911th snoozingnewt 🇨🇦 845 64 4ms 1 Sep 2024 911th albanian-laundromat 845 64 4ms 22 Sep 2025 917th janAkali 🇷🇺 844 77 132ms 12 Feb 2025 918th bschorno 844 92 375ms 12 Oct 2022 918th ChrisTheisen 844 92 371ms 14 Dec 2022 918th kellantech 844 92 408ms 4 Jul 2023 918th Mezzofloat 844 92 402ms 26 Aug 2023 918th Maximizer02 844 92 408ms 1 Oct 2023 918th madeforlosers 844 92 407ms 21 Nov 2024 918th ChromaChroma 844 92 407ms 7 Oct 2025 918th snoozingnewt 🇨🇦 844 92 422ms 8 Oct 2025 926th DialFrost 🇸🇬 843 66 93ms 7 Apr 2025 926th KasperKivimaeki 🇫🇮 843 66 6ms 22 Dec 2025 928th krcs 🇵🇱 842 53 280ms 9 May 2022 928th ryanlanegit 842 53 312ms 19 Jun 2022 928th sisyphus-ppcg 🇦🇺 842 53 453ms 15 Aug 2022 931st MeWhenI 🇻🇦 842 71 106ms 13 Dec 2022 932nd SirBogman 🇺🇸 842 89 38ms 4 May 2022 933rd error256 841 81 68ms 13 Sep 2024 934th CLOStrophobic 🇮🇹 841 89 42ms 14 Feb 2025 935th kmathis22 841 100 31ms 13 Nov 2025 936th emplv 🇱🇻 841 124 25ms 31 Oct 2022 937th raszpi 🇭🇺 840 77 111ms 1 Sep 2023 938th MeWhenI 🇻🇦 840 164 1,639ms 7 Nov 2025 939th frankgraziano 839 66 4ms 20 Apr 2025 940th eshilo-draper 839 75 90ms 6 Sep 2022 940th kmathis22 839 75 85ms 5 Sep 2025 942nd sean-niemann 🇺🇸 839 76 141ms 8 Oct 2024 943rd beardotpdf 839 99 422ms 12 Dec 2025 944th Codsilla 🇨🇦 838 51 263ms 1 Jul 2022 945th steffan-polygolf 838 81 10ms 23 Feb 2023 945th FranklinJiaChen 838 81 9ms 16 days ago 947th Andriamanitra 🇫🇮 838 83 12ms 17 Apr 2023 947th Natanaelel 🇸🇪 838 83 12ms 8 Jul 2023 949th Steffan153 🇫🇮 838 97 31ms 18 Jan 2023 950th CatsAreFluffy 838 101 61ms 18 Feb 2023 950th annaproxy 838 101 61ms 9 May 2023 950th wojtekmal 838 101 66ms 15 Nov 2023 950th HumanoidCPU 838 101 62ms 6 May 2024 950th eMGeeneer 838 101 430ms 27 Jun 2024 950th bac0id 838 101 66ms 29 Jun 2024 950th michaelmoynihan 838 101 458ms 3 Sep 2025 950th snoozingnewt 🇨🇦 838 101 421ms 6 Oct 2025 958th dokutan 837 88 39ms 9 Jun 2024 959th scpchicken 🇵🇼 836 55 11ms 4 May 2022 959th SirBogman 🇺🇸 836 55 8ms 5 May 2022 First Prev 881–960 of 3,596 Next Last