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 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 480th Artemis21 🇬🇧 706 113 17ms 23 Jan 2025 480th fkantelberg 706 113 10ms 11 Jul 2025 483rd Shanethegamer 🇺🇸 706 118 376ms 2 Oct 2024 484th BlankSpruce 706 123 439ms 1 Oct 2024 485th cbrt-x 706 157 139ms 1 Oct 2024 486th Shanethegamer 🇺🇸 706 172 39ms 2 Oct 2024 487th edsrzf 🇳🇿 705 76 1,005ms 1 Oct 2024 488th mousetail 🇳🇱 705 133 159ms 3 Oct 2024 489th janlelis 704 68 36ms 1 Oct 2024 490th Shanethegamer 🇺🇸 704 156 30ms 2 Oct 2024 491st emgordon154 702 76 5ms 7 Jun 2025 492nd LukeBridges 🇬🇧 701 92 10ms 3 Oct 2024 493rd Alex-x90 🇺🇸 701 124 453ms 1 Oct 2024 493rd Herbert00709 🇵🇱 701 124 61ms 14 Jun 2025 495th albanian-laundromat 700 108 55ms 27 days ago 496th HumanoidCPU 700 114 64ms 7 Mar 2025 497th Shanethegamer 🇺🇸 699 101 5ms 2 Oct 2024 498th emgordon154 699 134 240ms 25 Feb 2025 499th tobeannouncd 697 159 146ms 13 Dec 2024 500th MeWhenI 🇻🇦 697 174 41ms 13 Feb 2025 501st jipsong 🇩🇪 694 115 16ms 12 May 2025 501st luuumine 🇫🇷 694 115 17ms 2 Dec 2025 501st Bmrl7 694 115 10ms 25 Dec 2025 504th Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 505th Salutations45 693 93 10ms 17 Nov 2024 505th strattonwhisler 693 93 10ms 26 Mar 2025 505th JOrE20 693 93 10ms 12 Feb 2026 508th pardouin 🇫🇷 692 57 6ms 3 Oct 2024 509th NickTheEASDude 🇺🇸 690 115 3ms 17 Dec 2024 510th rowechenzhong 688 116 10ms 17 Oct 2024 511th MeWhenI 🇻🇦 686 68 267ms 2 Oct 2024 512th madex 🇩🇪 686 103 1ms 2 Oct 2024 513th aDwarfNamedUrist 684 162 138ms 1 Sep 2025 514th CatsAreFluffy 683 53 53ms 27 Dec 2024 515th dtbao20 🇻🇳 682 117 18ms 1 Oct 2024 515th Pyroan 682 117 17ms 22 Feb 2025 515th vgamula 🇺🇦 682 117 16ms 5 Aug 2025 515th FortuiteMan 🇫🇷 682 117 17ms 1 Dec 2025 515th yujqiao 682 117 17ms 16 Dec 2025 520th BlankSpruce 680 104 2ms 1 Oct 2024 521st the-zammers 680 163 149ms 1 Dec 2024 522nd tailorspy 679 128 477ms 4 Oct 2024 523rd GrayJoKing 🇦🇺 678 79 1,204ms 1 Oct 2024 524th commandz0 🇺🇸 677 98 505ms 1 Sep 2025 525th elgan65536 🇺🇸 676 118 12ms 2 Oct 2024 525th logvp 676 118 17ms 6 Oct 2024 525th ahmetdemirag 🇨🇾 676 118 10ms 6 Feb 2025 525th dirckvdende 676 118 17ms 10 Jul 2025 529th jkelly467 674 99 2,688ms 22 Jan 2026 530th Yax42 🇫🇷 674 129 76ms 8 Jan 2026 530th emgordon154 674 129 65ms 8 Feb 2026 532nd GolfingSuccess 🇬🇷 674 174 34ms 7 days ago 533rd Herbert00709 🇵🇱 673 105 2ms 14 Jun 2025 534th jerrandolph 673 177 295ms 25 Sep 2025 534th CaedenHarper 🇨🇦 673 177 312ms 17 Nov 2025 536th CaedenHarper 🇨🇦 671 99 425ms 24 days ago 537th error256 671 101 5ms 24 Oct 2024 538th emgordon154 670 115 111ms 9 Dec 2025 539th jtaxen 670 119 17ms 21 Oct 2024 539th psbpsbp 670 119 10ms 19 Dec 2024 539th klixel 🇨🇦 670 119 10ms 9 Apr 2025 539th vhoulbreque 🇫🇷 670 119 9ms 21 Nov 2025 543rd Shanethegamer 🇺🇸 668 65 1ms 1 Oct 2024 544th CaedenHarper 🇨🇦 668 140 571ms 3 Oct 2025 545th rniii 667 106 1ms 2 Oct 2024 545th gastropner 667 106 2ms 11 Feb 2025 545th solisolu 667 106 2ms 14 Feb 2026 548th dbut2 🇦🇺 666 179 284ms 31 Oct 2024 549th two-bad 🇬🇧 665 97 10ms 2 Oct 2024 549th LordSir101 665 97 10ms 10 Aug 2025 551st TaserTheFox 🇺🇸 665 120 17ms 8 Oct 2024 551st yokasuretsu 665 120 11ms 26 Jan 2025 551st Troon 665 120 11ms 17 Feb 2025 551st keelimeguy 🇺🇸 665 120 18ms 14 Jun 2025 555th yeminghan2021 663 131 65ms 3 Feb 2026 556th snoozingnewt 🇨🇦 662 180 295ms 2 Nov 2025 557th 4hg 🇺🇸 661 59 34ms 5 Oct 2024 558th error256 660 142 156ms 31 May 2025 559th BREMAUCY 🇫🇷 659 121 19ms 18 Jul 2025 559th retrohun 659 121 10ms 11 days ago First Prev 481–560 of 928 Next Last