The Taxicab Numbers hole will go live in approximately 4 days. Why not try and solve it ahead of time?
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 721st inventshah 873 97 58ms 6 May 2022 721st emgordon154 873 97 60ms 8 Feb 2026 723rd MeWhenI 🇻🇦 873 109 346ms 9 Feb 2023 724th CaedenHarper 🇨🇦 870 54 1,394ms 27 Sep 2025 724th sean-niemann 🇺🇸 870 54 1,439ms 27 Sep 2025 724th albanian-laundromat 🇺🇸 870 54 1,376ms 14 Nov 2025 724th xsot 🇸🇬 870 54 1,064ms 15 Nov 2025 728th GolfingSuccess 🇬🇷 870 71 2ms 5 May 2022 728th emplv 🇱🇻 870 71 2ms 5 May 2022 728th JayXon 🇺🇸 870 71 2ms 7 May 2022 728th m-tkach 🇺🇦 870 71 2ms 15 May 2022 728th nwellnhof 🇩🇪 870 71 2ms 5 Jun 2022 728th Irratix 🇳🇱 870 71 2ms 13 Jun 2022 728th michael-pruglo 🇺🇦 870 71 2ms 13 Jul 2022 728th stefangimmillaro 870 71 2ms 2 Jun 2023 728th kkoenig 870 71 2ms 21 Dec 2023 728th JohandeRuiter 🇳🇱 870 71 2ms 14 Sep 2024 728th masinag 🇮🇹 870 71 2ms 6 Oct 2024 728th Herbert00709 🇵🇱 870 71 3ms 6 days ago 740th AlephSquirrel 870 80 12ms 20 Apr 2023 740th ashtraypettingzoo 🇺🇸 870 80 14ms 1 Apr 2024 740th error256 870 80 18ms 19 Mar 2026 743rd Shanethegamer 🇺🇸 870 97 110ms 15 Apr 2025 743rd GolfingSuccess 🇬🇷 870 97 102ms 28 Nov 2025 743rd DialFrost 🇸🇬 870 97 109ms 1 Dec 2025 746th ovs-code 🇩🇪 870 133 42ms 8 Jul 2024 747th JayXon 🇺🇸 870 157 1,723ms 14 Sep 2025 748th nwellnhof 🇩🇪 868 53 6ms 4 May 2022 748th GrayJoKing 🇦🇺 868 53 7ms 6 May 2022 750th albanian-laundromat 🇺🇸 868 73 532ms 16 Dec 2025 751st Shanethegamer 🇺🇸 868 85 38ms 15 May 2023 751st albanian-laundromat 🇺🇸 868 85 40ms 25 Aug 2025 753rd dieggsy 868 97 31ms 8 Oct 2024 754th DialFrost 🇸🇬 866 64 5ms 10 Jul 2024 755th 123mjb 866 96 515ms 20 Nov 2025 755th noescareno 866 96 450ms 21 Nov 2025 757th emplv 🇱🇻 865 110 348ms 5 May 2022 757th Shanethegamer 🇺🇸 865 110 309ms 21 Nov 2023 757th targrik 865 110 340ms 30 Jun 2025 760th TylerBloom 864 96 118ms 22 Mar 2024 761st shellbertt 🇨🇦 864 98 59ms 9 May 2022 761st iakolzin 864 98 64ms 26 May 2022 761st Betuaredead 864 98 62ms 5 Jan 2023 761st oceko 864 98 58ms 19 Feb 2024 761st cuzdav 864 98 61ms 4 May 2025 761st timhaj 🇸🇮 864 98 64ms 12 Sep 2025 761st Yax42 🇫🇷 864 98 63ms 4 Oct 2025 761st liamjermy6 864 98 64ms 24 days ago 769th Yewzir 🇧🇪 864 158 1,596ms 8 days ago 770th nwellnhof 🇩🇪 863 51 39ms 4 May 2022 770th primo-ppcg 🇹🇭 863 51 41ms 6 May 2022 770th janlelis 863 51 40ms 10 May 2022 770th Natanaelel 🇸🇪 863 51 42ms 2 Jun 2022 770th blaztoma 🇱🇹 863 51 40ms 11 Mar 2026 775th deadp4nda 🇩🇪 863 90 412ms 26 Apr 2024 775th 123mjb 863 90 422ms 23 Jun 2025 775th michelebastione 🇮🇹 863 90 420ms 24 Aug 2025 775th razvandmtr 🇷🇴 863 90 527ms 6 Nov 2025 779th steffan-polygolf 862 73 97ms 23 Feb 2023 779th MWI-polygolf 862 73 93ms 6 Dec 2023 779th HumanoidCPU 862 73 91ms 7 May 2024 782nd GrayJoKing 🇦🇺 861 56 470ms 15 Jan 2024 782nd AlephSquirrel 861 56 419ms 21 Jan 2024 782nd CaedenHarper 🇨🇦 861 56 379ms 26 Jan 2026 785th MeWhenI 🇻🇦 861 145 1,220ms 28 Mar 2025 786th rucin93 🇵🇱 860 57 141ms 4 Aug 2024 786th dokutan 860 57 133ms 9 Aug 2024 788th Setvizan 860 62 11ms 12 Jan 2023 788th GreenBeansAgainstVeganism 860 62 13ms 13 Jan 2023 788th arctouch-cristiannevianna 860 62 12ms 3 Apr 2023 788th Corxldyphik 860 62 11ms 11 Apr 2023 788th Blockyheadman 860 62 15ms 1 Nov 2023 788th ollyspooner 860 62 11ms 22 Nov 2023 788th itserasmus 860 62 13ms 25 Jan 2024 788th Jacob385 860 62 11ms 13 Mar 2024 788th junkondo-jp 860 62 12ms 30 Jun 2024 788th ShiraJoseph 🇺🇸 860 62 11ms 1 Mar 2025 788th tomh1012 860 62 11ms 3 Dec 2025 788th scpchicken 🇵🇼 860 62 11ms 3 days ago 800th yzhs 🇩🇪 860 65 20ms 16 Jun 2022 First Prev 721–800 of 3,753 Next Last