Card Number Validation in Python 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 Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz 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 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 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions 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 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 ><> 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz 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 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 Apéry’s Constant Binary Lambda Calculus Calendar Connect Four Continued Fractions 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 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 71st travisdoesmath 632 106 17ms 7 Sep 2025 77th commandblockguy 🇺🇸 626 107 15ms 7 Oct 2024 77th zbreit 🇺🇸 626 107 18ms 29 Oct 2024 77th StardustGogeta 626 107 16ms 30 Oct 2024 77th ZakkkkAttackkkk 🇵🇭 626 107 17ms 8 Feb 2025 77th InigoK 🇺🇸 626 107 15ms 22 Sep 2025 82nd neihousaigaai 620 108 16ms 4 Oct 2024 82nd StefanHabel 🇨🇦 620 108 16ms 23 Jan 2025 82nd CaedenHarper 🇨🇦 620 108 17ms 22 Jul 2025 85th cros107 🇦🇺 609 110 16ms 1 Jan 2025 85th guilhem-roy 🇫🇷 609 110 16ms 29 May 2025 87th mousetail 🇳🇱 604 111 16ms 6 Oct 2024 88th OllieBoyne 🇬🇧 598 112 16ms 17 Oct 2024 88th WillConker 598 112 10ms 22 Oct 2024 88th maxgodfrey2004 🇨🇦 598 112 10ms 4 Jan 2025 91st blaztoma 🇱🇹 588 114 16ms 25 Sep 2025 92nd jipsong 🇩🇪 583 115 16ms 12 May 2025 93rd rowechenzhong 578 116 10ms 17 Oct 2024 94th dtbao20 🇻🇳 573 117 17ms 1 Oct 2024 94th Pyroan 573 117 16ms 22 Feb 2025 94th vgamula 🇺🇦 573 117 16ms 5 Aug 2025 94th FortuiteMan 🇫🇷 573 117 16ms 15 hours ago 98th elgan65536 568 118 10ms 2 Oct 2024 98th logvp 568 118 18ms 6 Oct 2024 98th ahmetdemirag 🇨🇾 568 118 9ms 6 Feb 2025 98th dirckvdende 568 118 16ms 10 Jul 2025 102nd jtaxen 563 119 16ms 21 Oct 2024 102nd psbpsbp 563 119 10ms 19 Dec 2024 102nd klixel 🇨🇦 563 119 10ms 9 Apr 2025 102nd vhoulbreque 🇫🇷 563 119 10ms 10 days ago 106th TaserTheFox 🇺🇸 558 120 20ms 8 Oct 2024 106th yokasuretsu 558 120 11ms 26 Jan 2025 106th Troon 558 120 10ms 17 Feb 2025 109th BREMAUCY 🇫🇷 554 121 16ms 18 Jul 2025 110th chartung17 549 122 10ms 24 Mar 2025 111th msbranicky 545 123 15ms 3 Oct 2024 111th bobbysq 545 123 9ms 5 Oct 2024 111th wuzekai518 545 123 9ms 8 Oct 2024 114th NotEvenIndian 540 124 10ms 22 Oct 2024 114th ridingqwerty 🇺🇸 540 124 16ms 16 Jan 2025 114th CommandLeo 🇮🇹 540 124 10ms 5 Oct 2025 117th bnic24 536 125 17ms 3 Oct 2024 117th adoxography 536 125 10ms 22 Oct 2024 117th lelbal 536 125 10ms 14 Oct 2025 120th CatsAreFluffy 528 127 16ms 30 Oct 2024 120th WillowWispy 528 127 9ms 25 May 2025 122nd Lv0Sys 🇵🇱 523 128 18ms 15 Jun 2025 123rd madex 🇩🇪 519 129 16ms 2 Oct 2024 123rd RedzGoose 🇦🇺 519 129 10ms 15 Oct 2024 123rd calebaitken 519 129 9ms 11 Apr 2025 123rd rollershutter 519 129 16ms 11 days ago 127th Europe2048 515 130 10ms 2 Oct 2024 127th nstearns96 🇬🇧 515 130 16ms 2 Oct 2024 127th Stockoh 🇫🇷 515 130 16ms 4 Jul 2025 130th inverseLorentz 🇦🇺 511 131 9ms 7 Oct 2024 130th sciencejiho 511 131 16ms 11 Feb 2025 130th Jaydosu 511 131 9ms 11 Apr 2025 130th Emutis 🇱🇹 511 131 10ms 20 days ago 134th Mabeloid 🇳🇴 504 133 10ms 2 Oct 2024 135th sciencedjinn 493 136 9ms 8 Nov 2024 135th ihatethefrench 493 136 17ms 4 Jan 2025 137th kurkale6ka 489 137 21ms 16 Oct 2024 137th 4ndyJ 🇬🇧 489 137 10ms 14 Nov 2024 137th Mikey-Beep 🇬🇧 489 137 16ms 6 Aug 2025 137th wobblybits 489 137 17ms 17 Aug 2025 141st scpchicken 🇵🇼 482 139 16ms 6 Oct 2024 142nd NanduBC 479 140 10ms 1 Oct 2024 142nd jmerle 🇳🇱 479 140 10ms 10 Jan 2025 142nd RobertHoeh 479 140 9ms 3 Mar 2025 142nd smilesformiles3 479 140 15ms 12 Jun 2025 142nd artem-aramma 479 140 16ms 18 Jun 2025 142nd Andrey2001 479 140 17ms 4 days ago 148th FranklinJiaChen 475 141 10ms 2 Oct 2024 149th brimstonetrader 472 142 10ms 17 Oct 2024 149th codewrite 🇬🇧 472 142 13ms 5 May 2025 First Prev 76–150 of 205 Next Last