The Taxicab Numbers hole will go live in approximately 3 days. Why not try and solve it ahead of time?
ISBN in Python 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 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 Bytes Time Submitted 100th adamnielson42 🇺🇸 827 110 11ms 25 Apr 2023 100th sultan 827 110 11ms 24 Feb 2024 100th fgrosshans 🇫🇷 827 110 10ms 16 Jul 2024 100th InigoK 🇺🇸 827 110 14ms 22 Sep 2025 100th albanian-laundromat 🇺🇸 827 110 12ms 7 Nov 2025 100th vhoulbreque 🇫🇷 827 110 11ms 25 Nov 2025 107th neihousaigaai 820 111 11ms 11 Jan 2022 107th knutae 🇳🇴 820 111 11ms 18 Jan 2022 107th rschwa6308 🇺🇸 820 111 11ms 22 Mar 2023 107th zbreit 🇺🇸 820 111 11ms 22 Mar 2023 107th plcc0 820 111 10ms 3 Mar 2025 107th emgordon154 820 111 11ms 25 Mar 2025 107th BREMAUCY 🇫🇷 820 111 10ms 15 Apr 2025 107th now4est 🇯🇵 820 111 12ms 25 Sep 2025 115th guilhem-roy 🇫🇷 813 112 12ms 5 Jun 2022 115th ahmetdemirag 🇨🇾 813 112 12ms 30 Jun 2024 115th CommandLeo 🇮🇹 813 112 15ms 3 Nov 2025 115th denkyuu1 813 112 11ms 23 Feb 2026 119th commandz0 🇺🇸 805 113 12ms 3 Nov 2022 119th jakobkordez 🇸🇮 805 113 10ms 13 Nov 2022 119th mossprescott 805 113 10ms 16 Jan 2023 119th SB-945 805 113 11ms 19 Aug 2023 119th davitf 805 113 10ms 30 Apr 2024 119th kbeat 🇰🇿 805 113 11ms 18 May 2025 125th aonkeeper4 798 114 11ms 5 Jul 2022 125th frankgraziano 798 114 11ms 8 Jan 2023 125th m42km 798 114 11ms 22 Nov 2023 125th thienudomsrirungruang 798 114 18ms 14 May 2024 125th jtaxen 798 114 12ms 8 Jun 2024 125th CutSandstone 798 114 10ms 8 Jul 2024 131st jmerle 🇳🇱 791 115 10ms 22 Jan 2022 131st PiterAnnema 791 115 19ms 23 Mar 2022 131st AGoyet 791 115 11ms 29 Jun 2022 131st Eilonlif 🇮🇱 791 115 12ms 11 Sep 2022 131st IsmaelGSerrano 791 115 12ms 2 Nov 2022 131st bobbysq 791 115 11ms 22 Jan 2023 131st msbranicky 791 115 10ms 25 Jul 2023 131st ArenaGrenade 791 115 11ms 19 Feb 2024 131st NickTheEASDude 🇺🇸 791 115 10ms 15 May 2024 131st dokutan 791 115 10ms 13 Aug 2024 131st maxgodfrey2004 🇨🇦 791 115 10ms 8 Jan 2025 131st Pyroan 791 115 11ms 21 Feb 2025 131st chartung17 791 115 10ms 24 Mar 2025 144th martinnorling 🇸🇪 784 116 11ms 18 Feb 2022 144th Indivicivet 784 116 12ms 9 May 2022 144th Bonjour27891 🇻🇳 784 116 11ms 15 Jul 2022 144th tri1212 🇻🇳 784 116 10ms 16 Jul 2022 144th MichalMarsalek 🇨🇿 784 116 11ms 30 Nov 2022 144th yzhs 🇩🇪 784 116 10ms 25 Jun 2023 144th Attero 🇸🇪 784 116 10ms 2 Jan 2024 144th RobertHoeh 784 116 11ms 9 Apr 2024 144th Mabeloid 🇳🇴 784 116 10ms 7 Oct 2024 144th rollershutter 784 116 10ms 24 Feb 2025 144th JOrE20 784 116 11ms 23 Feb 2026 155th CedricGebistorf 778 117 12ms 19 Feb 2022 155th sjrct 778 117 10ms 5 Aug 2024 155th FranklinJiaChen 778 117 10ms 10 Aug 2024 155th Artemis21 🇬🇧 778 117 12ms 21 Dec 2024 159th Tess2662 771 118 11ms 8 Sep 2022 159th CheeseCake628 🇳🇴 771 118 11ms 20 Mar 2023 159th randolchance 771 118 12ms 20 Mar 2023 159th jeff-at-tamer-dot-codes 🇺🇸 771 118 10ms 19 May 2023 159th gabe-gallegos 771 118 10ms 19 May 2024 159th martion2007 771 118 11ms 14 Aug 2024 159th orifu 771 118 11ms 4 Nov 2024 159th TheZwierzLF 🇵🇱 771 118 11ms 27 May 2025 159th addmai 771 118 10ms 30 Jul 2025 168th RYNO8 765 119 11ms 18 Feb 2022 168th eshilo-draper 765 119 11ms 10 Oct 2022 168th georgehulme 765 119 11ms 12 Oct 2022 168th Omega65536 🇩🇪 765 119 11ms 24 Nov 2022 168th Ripick 765 119 11ms 2 Feb 2023 168th Ythaenagor 765 119 11ms 5 Aug 2024 168th PyryL 🇫🇮 765 119 11ms 20 Aug 2024 168th JunkIce 765 119 10ms 25 Nov 2024 168th Stockoh 🇫🇷 765 119 11ms 13 Feb 2025 168th Alban-Boissard 765 119 11ms 14 Jun 2025 178th fkantelberg 758 120 11ms 18 Jul 2023 178th Bmrl7 758 120 10ms 29 Feb 2024 178th elgan65536 🇺🇸 758 120 18ms 1 Apr 2024 178th robin-scragg 758 120 14ms 25 Jul 2025 178th zgialor-lab 758 120 10ms 16 days ago 183rd Natanaelel 🇸🇪 752 121 11ms 12 Jan 2022 183rd NerdyMcNerd42 752 121 11ms 20 Aug 2022 183rd Kloppermand 🇩🇰 752 121 10ms 3 Oct 2022 183rd ehulinsky 🇺🇸 752 121 18ms 15 May 2023 183rd AbhilashaTandon 752 121 11ms 21 Sep 2023 183rd davecame 752 121 11ms 2 Oct 2023 183rd gussy420 752 121 12ms 23 Oct 2023 183rd tobyLovick 752 121 10ms 13 Dec 2023 191st jm600 746 122 10ms 19 Apr 2022 191st krcs 🇵🇱 746 122 10ms 29 Apr 2022 191st bbakersmith 746 122 10ms 6 Jun 2022 191st nstearns96 🇬🇧 746 122 11ms 29 Nov 2022 191st stertooy 🇧🇪 746 122 11ms 11 Jun 2024 191st croc54 746 122 10ms 8 Jan 2025 191st Matter1024 🇮🇳 746 122 15ms 15 Nov 2025 191st Mikey-Beep 🇬🇧 746 122 14ms 18 days ago 199th gitbedd 🇬🇧 740 123 11ms 10 Jan 2022 199th andre-lameirinhas 🇵🇹 740 123 11ms 8 Aug 2022 First Prev 101–200 of 380 Next Last