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Card Number Validation 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 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 501st mousetail 🇳🇱 706 133 154ms 3 Oct 2024 502nd janlelis 705 68 43ms 1 Oct 2024 503rd emgordon154 705 76 5ms 7 Jun 2025 504th Shanethegamer 🇺🇸 704 101 5ms 2 Oct 2024 505th Alex-x90 🇺🇸 702 124 415ms 1 Oct 2024 505th Herbert00709 🇵🇱 702 124 61ms 14 Jun 2025 507th MeWhenI 🇻🇦 702 174 41ms 13 Feb 2025 508th LukeBridges 🇬🇧 701 92 9ms 3 Oct 2024 508th ComradeSquirrel 701 92 10ms 11 days ago 510th albanian-laundromat 🇺🇸 700 108 57ms 6 Mar 2026 511th HumanoidCPU 700 114 66ms 7 Mar 2025 512th emgordon154 700 134 235ms 25 Feb 2025 513th tobeannouncd 700 159 146ms 13 Dec 2024 514th CaedenHarper 🇨🇦 694 36 46ms 15 days ago 515th Salutations45 694 93 10ms 17 Nov 2024 515th strattonwhisler 694 93 11ms 26 Mar 2025 515th JOrE20 694 93 10ms 12 Feb 2026 518th jipsong 🇩🇪 694 115 18ms 12 May 2025 518th luuumine 🇫🇷 694 115 19ms 2 Dec 2025 518th Bmrl7 694 115 13ms 25 Dec 2025 521st Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 522nd pardouin 🇫🇷 693 57 4ms 3 Oct 2024 523rd NickTheEASDude 🇺🇸 691 115 3ms 17 Dec 2024 524th MeWhenI 🇻🇦 688 68 284ms 2 Oct 2024 525th rowechenzhong 688 116 17ms 17 Oct 2024 526th solisolu 687 103 2ms 23 days ago 527th aDwarfNamedUrist 687 162 138ms 1 Sep 2025 528th CatsAreFluffy 685 53 56ms 27 Dec 2024 529th dtbao20 🇻🇳 682 117 19ms 1 Oct 2024 529th Pyroan 682 117 18ms 22 Feb 2025 529th vgamula 🇺🇦 682 117 17ms 5 Aug 2025 529th FortuiteMan 🇫🇷 682 117 18ms 1 Dec 2025 529th yujqiao 682 117 25ms 16 Dec 2025 534th the-zammers 682 163 149ms 1 Dec 2024 535th GrayJoKing 🇦🇺 681 79 1,204ms 1 Oct 2024 536th BlankSpruce 681 104 2ms 1 Oct 2024 537th tailorspy 680 128 454ms 4 Oct 2024 538th commandz0 🇺🇸 677 98 508ms 1 Sep 2025 539th elgan65536 🇺🇸 676 118 11ms 2 Oct 2024 539th logvp 676 118 18ms 6 Oct 2024 539th ahmetdemirag 🇨🇾 676 118 10ms 6 Feb 2025 539th dirckvdende 676 118 17ms 10 Jul 2025 543rd jkelly467 675 99 2,673ms 22 Jan 2026 544th emgordon154 675 115 111ms 9 Dec 2025 545th Yax42 🇫🇷 675 129 81ms 8 Jan 2026 545th emgordon154 675 129 67ms 8 Feb 2026 547th jerrandolph 675 177 368ms 25 Sep 2025 547th CaedenHarper 🇨🇦 675 177 326ms 17 Nov 2025 549th Herbert00709 🇵🇱 674 105 2ms 14 Jun 2025 550th error256 672 101 5ms 24 Oct 2024 551st Shanethegamer 🇺🇸 671 65 1ms 1 Oct 2024 552nd CaedenHarper 🇨🇦 671 99 484ms 8 Mar 2026 553rd jtaxen 670 119 18ms 21 Oct 2024 553rd psbpsbp 670 119 9ms 19 Dec 2024 553rd klixel 🇨🇦 670 119 10ms 9 Apr 2025 553rd vhoulbreque 🇫🇷 670 119 16ms 21 Nov 2025 557th rniii 668 106 1ms 2 Oct 2024 557th gastropner 668 106 2ms 11 Feb 2025 557th prestosilver 🇺🇸 668 106 2ms 3 days ago 560th CaedenHarper 🇨🇦 668 140 531ms 3 Oct 2025 561st GolfingSuccess 🇬🇷 668 174 38ms 25 Mar 2026 562nd dbut2 🇦🇺 667 179 327ms 31 Oct 2024 563rd two-bad 🇬🇧 665 97 15ms 2 Oct 2024 563rd LordSir101 665 97 10ms 10 Aug 2025 565th TaserTheFox 🇺🇸 665 120 18ms 8 Oct 2024 565th yokasuretsu 665 120 11ms 26 Jan 2025 565th Troon 665 120 10ms 17 Feb 2025 565th keelimeguy 🇺🇸 665 120 19ms 14 Jun 2025 569th yeminghan2021 664 131 65ms 3 Feb 2026 570th AlephSquirrel 664 146 4ms 14 May 2025 571st snoozingnewt 🇨🇦 663 180 338ms 2 Nov 2025 572nd 4hg 🇺🇸 662 59 34ms 5 Oct 2024 573rd error256 661 142 171ms 31 May 2025 574th albanian-laundromat 🇺🇸 661 291 12ms 23 days ago 575th BREMAUCY 🇫🇷 659 121 17ms 18 Jul 2025 575th retrohun 659 121 10ms 21 Mar 2026 577th xyangst 658 98 13ms 15 Oct 2024 577th BambooleanLogic 🇸🇪 658 98 12ms 21 Oct 2024 579th denkyuu1 657 73 39ms 6 days ago 580th prestosilver 🇺🇸 656 128 407ms 3 days ago 581st Yax42 🇫🇷 655 108 2ms 24 Mar 2026 582nd chartung17 654 122 10ms 24 Mar 2025 583rd w911 653 183 327ms 7 Oct 2024 584th frankgraziano 652 128 8ms 21 Feb 2026 585th rucin93 🇵🇱 652 144 153ms 28 Oct 2024 586th DialFrost 🇸🇬 651 67 2ms 22 Dec 2024 587th Babafaba 651 102 515ms 11 Nov 2025 587th jusaka 651 102 465ms 10 days ago 589th msbranicky 649 123 17ms 3 Oct 2024 589th bobbysq 649 123 12ms 5 Oct 2024 589th wuzekai518 649 123 10ms 8 Oct 2024 589th denkyuu1 649 123 16ms 10 Mar 2026 589th fuzzylojik-golf 🇺🇸 649 123 17ms 27 Mar 2026 594th scpchicken 🇵🇼 648 61 4ms 21 days ago 595th koipondx86 646 123 2ms 8 Nov 2024 596th CaedenHarper 🇨🇦 645 100 10ms 22 Aug 2025 596th iczelia 🇩🇪 645 100 13ms 11 Oct 2025 596th Yax42 🇫🇷 645 100 11ms 27 Nov 2025 599th tomh1012 645 111 474ms 8 Sep 2025 600th Apataras 645 145 459ms 25 Jun 2025 First Prev 501–600 of 1,013 Next Last