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 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 Multitap Input NFA Simulator Numbrix 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 Multitap Input NFA Simulator Numbrix 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 Bytes Time Submitted 451st janlelis 702 68 35ms 1 Oct 2024 452nd emgordon154 702 76 5ms 7 Jun 2025 453rd BlankSpruce 701 123 378ms 1 Oct 2024 454th mousetail 🇳🇱 701 133 149ms 3 Oct 2024 455th LukeBridges 🇬🇧 700 92 9ms 3 Oct 2024 456th HumanoidCPU 699 114 62ms 7 Mar 2025 456th blaztoma 🇱🇹 699 114 16ms 25 Sep 2025 458th emgordon154 696 101 2ms 25 Nov 2024 459th emgordon154 696 134 224ms 25 Feb 2025 460th Alex-x90 🇺🇸 695 124 387ms 1 Oct 2024 460th Herbert00709 🇵🇱 695 124 57ms 14 Jun 2025 462nd tobeannouncd 695 159 146ms 13 Dec 2024 463rd Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 464th jipsong 🇩🇪 693 115 17ms 12 May 2025 464th luuumine 🇫🇷 693 115 20ms 13 days ago 466th Salutations45 692 93 10ms 17 Nov 2024 466th strattonwhisler 692 93 9ms 26 Mar 2025 468th NickTheEASDude 🇺🇸 690 115 3ms 17 Dec 2024 469th pardouin 🇫🇷 688 57 4ms 3 Oct 2024 470th Bmrl7 687 116 10ms 3 Oct 2024 470th rowechenzhong 687 116 9ms 17 Oct 2024 472nd MeWhenI 🇻🇦 686 68 300ms 2 Oct 2024 473rd error256 685 104 425ms 14 Oct 2024 474th madex 🇩🇪 683 103 1ms 2 Oct 2024 475th aDwarfNamedUrist 682 162 138ms 1 Sep 2025 476th MeWhenI 🇻🇦 681 108 163ms 2 Oct 2024 477th dtbao20 🇻🇳 681 117 16ms 1 Oct 2024 477th Pyroan 681 117 16ms 22 Feb 2025 477th vgamula 🇺🇦 681 117 19ms 5 Aug 2025 477th FortuiteMan 🇫🇷 681 117 20ms 14 days ago 481st CatsAreFluffy 680 53 49ms 27 Dec 2024 482nd Shanethegamer 🇺🇸 679 65 2ms 1 Oct 2024 483rd the-zammers 678 163 149ms 1 Dec 2024 484th plcc0 676 37 69ms 6 Apr 2025 485th commandblockguy 🇺🇸 676 98 471ms 1 Sep 2025 486th BlankSpruce 676 104 2ms 1 Oct 2024 487th elgan65536 675 118 10ms 2 Oct 2024 487th logvp 675 118 15ms 6 Oct 2024 487th ahmetdemirag 🇨🇾 675 118 9ms 6 Feb 2025 487th plcc0 675 118 15ms 6 Apr 2025 487th KatieLG 🇬🇧 675 118 16ms 20 Apr 2025 487th dirckvdende 675 118 19ms 10 Jul 2025 493rd edsrzf 🇳🇿 673 99 2,890ms 5 Jul 2025 494th tailorspy 673 128 379ms 4 Oct 2024 495th jerrandolph 673 177 285ms 25 Sep 2025 495th CaedenHarper 🇨🇦 673 177 278ms 27 days ago 497th Herbert00709 🇵🇱 670 105 2ms 14 Jun 2025 498th jtaxen 670 119 15ms 21 Oct 2024 498th psbpsbp 670 119 9ms 19 Dec 2024 498th klixel 🇨🇦 670 119 9ms 9 Apr 2025 498th vhoulbreque 🇫🇷 670 119 9ms 24 days ago 502nd error256 669 101 4ms 24 Oct 2024 503rd CaedenHarper 🇨🇦 666 140 692ms 3 Oct 2025 504th dbut2 🇦🇺 666 179 264ms 31 Oct 2024 505th emgordon154 665 111 4ms 12 Jan 2025 506th two-bad 🇬🇧 664 97 10ms 2 Oct 2024 506th LordSir101 664 97 9ms 10 Aug 2025 508th rniii 664 106 1ms 2 Oct 2024 508th gastropner 664 106 2ms 11 Feb 2025 510th TaserTheFox 🇺🇸 664 120 16ms 8 Oct 2024 510th yokasuretsu 664 120 10ms 26 Jan 2025 510th Troon 664 120 10ms 17 Feb 2025 510th keelimeguy 🇺🇸 664 120 16ms 14 Jun 2025 514th CaedenHarper 🇨🇦 663 100 454ms 22 Jul 2025 515th AlephSquirrel 663 146 4ms 14 May 2025 516th snoozingnewt 🇨🇦 662 180 268ms 2 Nov 2025 517th 4hg 🇺🇸 661 59 34ms 5 Oct 2024 518th DialFrost 🇸🇬 659 67 2ms 22 Dec 2024 519th BREMAUCY 🇫🇷 658 121 16ms 18 Jul 2025 520th xyangst 657 98 10ms 15 Oct 2024 520th BambooleanLogic 🇸🇪 657 98 9ms 21 Oct 2024 522nd error256 657 142 154ms 31 May 2025 523rd jwhear 🇺🇸 655 197 1,696ms 1 Oct 2024 524th chartung17 653 122 10ms 24 Mar 2025 525th w911 651 183 268ms 7 Oct 2024 First Prev 451–525 of 848 Next Last