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 emgordon154 702 76 5ms 7 Jun 2025 452nd mousetail 🇳🇱 701 133 219ms 3 Oct 2024 453rd LukeBridges 🇬🇧 700 92 9ms 3 Oct 2024 454th HumanoidCPU 699 114 62ms 7 Mar 2025 454th blaztoma 🇱🇹 699 114 16ms 25 Sep 2025 456th BlankSpruce 699 123 378ms 1 Oct 2024 457th emgordon154 696 101 2ms 25 Nov 2024 458th emgordon154 696 134 243ms 25 Feb 2025 459th tobeannouncd 695 159 146ms 13 Dec 2024 460th Alex-x90 🇺🇸 694 124 387ms 1 Oct 2024 460th Herbert00709 🇵🇱 694 124 57ms 14 Jun 2025 462nd Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 463rd jipsong 🇩🇪 693 115 17ms 12 May 2025 463rd luuumine 🇫🇷 693 115 20ms 9 days ago 465th Salutations45 692 93 10ms 17 Nov 2024 465th strattonwhisler 692 93 9ms 26 Mar 2025 467th NickTheEASDude 🇺🇸 690 115 3ms 17 Dec 2024 468th pardouin 🇫🇷 688 57 4ms 3 Oct 2024 469th Bmrl7 687 116 10ms 3 Oct 2024 469th rowechenzhong 687 116 9ms 17 Oct 2024 471st MeWhenI 🇻🇦 686 68 223ms 2 Oct 2024 472nd error256 685 104 367ms 14 Oct 2024 473rd madex 🇩🇪 683 103 1ms 2 Oct 2024 474th aDwarfNamedUrist 682 162 138ms 1 Sep 2025 475th MeWhenI 🇻🇦 681 108 163ms 2 Oct 2024 476th dtbao20 🇻🇳 681 117 16ms 1 Oct 2024 476th Pyroan 681 117 16ms 22 Feb 2025 476th vgamula 🇺🇦 681 117 19ms 5 Aug 2025 476th FortuiteMan 🇫🇷 681 117 20ms 10 days ago 480th CatsAreFluffy 680 53 49ms 27 Dec 2024 481st Shanethegamer 🇺🇸 679 65 2ms 1 Oct 2024 482nd the-zammers 678 163 149ms 1 Dec 2024 483rd plcc0 676 37 69ms 6 Apr 2025 484th commandblockguy 🇺🇸 676 98 471ms 1 Sep 2025 485th BlankSpruce 676 104 2ms 1 Oct 2024 486th elgan65536 675 118 10ms 2 Oct 2024 486th logvp 675 118 15ms 6 Oct 2024 486th ahmetdemirag 🇨🇾 675 118 9ms 6 Feb 2025 486th plcc0 675 118 15ms 6 Apr 2025 486th KatieLG 🇬🇧 675 118 16ms 20 Apr 2025 486th dirckvdende 675 118 19ms 10 Jul 2025 492nd edsrzf 🇳🇿 673 99 2,890ms 5 Jul 2025 493rd jerrandolph 673 177 285ms 25 Sep 2025 493rd CaedenHarper 🇨🇦 673 177 278ms 23 days ago 495th tailorspy 672 128 379ms 4 Oct 2024 496th Herbert00709 🇵🇱 670 105 2ms 14 Jun 2025 497th error256 669 101 4ms 24 Oct 2024 498th jtaxen 669 119 15ms 21 Oct 2024 498th psbpsbp 669 119 9ms 19 Dec 2024 498th klixel 🇨🇦 669 119 9ms 9 Apr 2025 498th vhoulbreque 🇫🇷 669 119 9ms 19 days ago 502nd CaedenHarper 🇨🇦 666 140 692ms 3 Oct 2025 503rd dbut2 🇦🇺 666 179 264ms 31 Oct 2024 504th emgordon154 665 111 4ms 12 Jan 2025 505th two-bad 🇬🇧 664 97 10ms 2 Oct 2024 505th LordSir101 664 97 9ms 10 Aug 2025 507th rniii 664 106 1ms 2 Oct 2024 507th gastropner 664 106 2ms 11 Feb 2025 509th TaserTheFox 🇺🇸 664 120 16ms 8 Oct 2024 509th yokasuretsu 664 120 10ms 26 Jan 2025 509th Troon 664 120 10ms 17 Feb 2025 509th keelimeguy 🇺🇸 664 120 16ms 14 Jun 2025 513th CaedenHarper 🇨🇦 663 100 454ms 22 Jul 2025 514th AlephSquirrel 663 146 3ms 14 May 2025 515th snoozingnewt 🇨🇦 662 180 268ms 2 Nov 2025 516th 4hg 🇺🇸 661 59 34ms 5 Oct 2024 517th DialFrost 🇸🇬 659 67 2ms 22 Dec 2024 518th BREMAUCY 🇫🇷 658 121 16ms 18 Jul 2025 519th xyangst 657 98 10ms 15 Oct 2024 519th BambooleanLogic 🇸🇪 657 98 9ms 21 Oct 2024 521st error256 657 142 178ms 31 May 2025 522nd jwhear 🇺🇸 655 197 1,696ms 1 Oct 2024 523rd chartung17 653 122 10ms 24 Mar 2025 524th w911 651 183 268ms 7 Oct 2024 525th albanian-laundromat 651 293 14ms 3 days ago First Prev 451–525 of 845 Next Last