Collatz in all languages in bytes. 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 Bytes Time Submitted 236th JayXon 🇺🇸 932 60 4ms 29 Jan 2024 236th rucin93 🇵🇱 932 60 5ms 10 Jul 2024 236th sean-niemann 🇺🇸 932 60 5ms 10 Jul 2024 236th edsrzf 🇳🇿 932 60 5ms 9 Mar 2026 245th Lydxn 🇨🇦 931 70 109ms 17 Oct 2022 245th JayXon 🇺🇸 931 70 108ms 17 Oct 2022 247th sisyphus-ppcg 🇦🇺 930 50 2,565ms 31 Jan 2023 247th saito-ta 🇯🇵 930 50 844ms 12 Dec 2024 249th sisyphus-ppcg 🇦🇺 930 65 106ms 19 Dec 2025 249th ovs-code 🇩🇪 930 65 118ms 19 Dec 2025 251st Steffan153 🇫🇮 930 67 37ms 19 Aug 2024 251st JayXon 🇺🇸 930 67 37ms 19 Aug 2024 253rd Natanaelel 🇸🇪 929 28 168ms 22 Jul 2022 253rd SirBogman 🇺🇸 929 28 180ms 17 Sep 2022 255th JayXon 🇺🇸 929 57 155ms 19 Aug 2024 256th roavin 928 84 430ms 23 Jun 2022 256th tkr-sh 🇰🇵 928 84 420ms 20 Aug 2022 256th Nickmiste 928 84 422ms 9 Nov 2022 256th Matgc04 928 84 422ms 19 May 2023 256th postie77 928 84 418ms 19 May 2023 256th ertz1ertz 928 84 420ms 13 Sep 2024 256th Grabnukebomb 928 84 413ms 13 Sep 2024 256th Shanethegamer 🇺🇸 928 84 443ms 9 Apr 2025 256th HumanoidCPU 928 84 410ms 10 Apr 2025 256th annaproxy 928 84 423ms 11 Apr 2025 256th Re-Adventures 🇮🇳 928 84 424ms 15 Apr 2025 256th janbehrens 🇩🇪 928 84 436ms 17 Apr 2025 256th Flix7dev 🇧🇪 928 84 371ms 21 Oct 2025 269th KasperKivimaeki 🇫🇮 928 104 358ms 10 Dec 2025 270th h3ra993huskp 🇯🇵 927 90 425ms 30 Nov 2025 271st btnlq 925 59 5ms 6 Nov 2022 271st DialFrost 🇸🇬 925 59 5ms 23 Dec 2025 273rd Lydxn 🇨🇦 925 90 123ms 6 May 2022 274th Bubbler-4 924 33 2,528ms 6 May 2022 274th rak1507 🇬🇧 924 33 108ms 8 May 2022 274th ngn 🇧🇬 924 33 25ms 11 May 2022 274th zacjl 924 33 32ms 3 Jun 2025 274th GrayJoKing 🇦🇺 924 33 13ms 4 Jun 2025 274th HPWiz 🇳🇿 924 33 9ms 16 Nov 2025 280th nwellnhof 🇩🇪 924 51 40ms 4 May 2022 280th primo-ppcg 🇹🇭 924 51 42ms 6 May 2022 280th janlelis 924 51 38ms 10 May 2022 280th Natanaelel 🇸🇪 924 51 40ms 2 Jun 2022 280th blaztoma 🇱🇹 924 51 38ms 11 Mar 2026 285th MichalMarsalek 🇨🇿 924 71 137ms 5 May 2022 285th Lydxn 🇨🇦 924 71 132ms 7 May 2022 285th GrayJoKing 🇦🇺 924 71 128ms 8 May 2022 285th JayXon 🇺🇸 924 71 128ms 8 May 2022 285th Steffan153 🇫🇮 924 71 131ms 9 Mar 2023 285th Shanethegamer 🇺🇸 924 71 126ms 15 May 2023 285th MeWhenI 🇻🇦 924 71 133ms 8 Aug 2023 285th sean-niemann 🇺🇸 924 71 129ms 9 Jan 2025 293rd Herbert00709 🇵🇱 924 92 59ms 17 Nov 2023 293rd 4QT0R 924 92 61ms 23 Nov 2023 293rd ovs-code 🇩🇪 924 92 56ms 3 Jun 2024 296th uiamn 923 58 12ms 6 Sep 2022 296th 5quiwyrm 923 58 14ms 29 Sep 2022 296th alasdair-greenland 923 58 13ms 13 Jan 2023 296th kirjavascript 923 58 11ms 4 Aug 2025 296th Posandu 923 58 12ms 26 Aug 2025 296th mrxz 🇳🇱 923 58 11ms 3 Sep 2025 302nd pardouin 🇫🇷 923 72 2,442ms 21 May 2025 303rd GrayJoKing 🇦🇺 923 74 4ms 23 Dec 2025 303rd FlyingPenguin223 923 74 6ms 29 Dec 2025 305th Steffan153 🇫🇮 922 76 12ms 15 May 2023 305th primo-ppcg 🇹🇭 922 76 20ms 15 May 2023 305th Lydxn 🇨🇦 922 76 8ms 22 May 2023 305th GrayJoKing 🇦🇺 922 76 12ms 24 Aug 2023 305th kg583 🇺🇸 922 76 12ms 22 Feb 2026 310th xnor-gate 921 63 187ms 20 Jan 2025 311th Steffan153 🇫🇮 921 79 21ms 19 Mar 2026 312th primo-ppcg 🇹🇭 919 61 7ms 6 May 2022 312th sisyphus-ppcg 🇦🇺 919 61 10ms 14 Jul 2022 314th Lydxn 🇨🇦 919 70 143ms 7 May 2022 314th JayXon 🇺🇸 919 70 143ms 7 May 2022 316th annaproxy 919 79 112ms 24 Aug 2022 316th GrayJoKing 🇦🇺 919 79 86ms 28 Aug 2022 316th JayXon 🇺🇸 919 79 560ms 5 Apr 2023 316th Lydxn 🇨🇦 919 79 556ms 9 Apr 2023 316th IanUtley 919 79 115ms 3 Nov 2023 First Prev 241–320 of 3,788 Next Last