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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 301st stefangimmillaro 798 87 113ms 4 Oct 2024 302nd bzijlema 🇳🇱 798 100 19ms 10 Oct 2024 302nd bricknellj 798 100 20ms 4 Mar 2025 304th DialFrost 🇸🇬 797 85 7ms 1 Oct 2024 304th xsot 🇸🇬 797 85 5ms 7 Oct 2024 306th MeWhenI 🇻🇦 797 109 453ms 2 Oct 2024 307th Shanethegamer 🇺🇸 797 128 2ms 3 Oct 2024 308th 2bular 796 49 31ms 8 Nov 2025 309th tayloia 🇬🇧 796 81 15ms 3 Oct 2024 309th targrik 796 81 11ms 8 Feb 2025 311th m-tkach 🇺🇦 796 138 29ms 3 Oct 2024 312th MeWhenI 🇻🇦 795 90 490ms 2 Oct 2024 313th DialFrost 🇸🇬 794 84 2,616ms 26 Oct 2024 314th vang1ong7ang 794 118 146ms 22 days ago 315th Natanaelel 🇸🇪 793 48 145ms 1 Oct 2024 316th Shanethegamer 🇺🇸 793 208 1,218ms 14 Apr 2025 316th DialFrost 🇸🇬 793 208 1,223ms 18 Apr 2025 318th pardouin 🇫🇷 791 81 136ms 29 Jan 2025 318th ovs-code 🇩🇪 791 81 124ms 17 Apr 2025 320th jared-hughes 791 203 88ms 20 Dec 2024 321st saito-ta 🇯🇵 790 74 8ms 1 Oct 2024 322nd ovs-code 🇩🇪 790 84 524ms 3 Oct 2024 322nd Shanethegamer 🇺🇸 790 84 471ms 3 Oct 2024 324th lifthrasiir 🇰🇷 790 101 17ms 21 Nov 2024 324th btjones0 790 101 18ms 2 Dec 2024 326th Shanethegamer 🇺🇸 789 88 106ms 4 Oct 2024 327th MeWhenI 🇻🇦 789 122 39ms 5 Oct 2024 328th emgordon154 789 151 340ms 17 Jan 2025 329th edsrzf 🇳🇿 788 119 158ms 23 Jul 2025 330th KingSkyrock 🇺🇸 786 82 14ms 14 Oct 2024 331st retrohun 786 90 2ms 22 days ago 332nd Shanethegamer 🇺🇸 786 91 459ms 3 Oct 2024 333rd stefangimmillaro 785 61 39ms 1 Oct 2024 334th namelessiw 785 119 483ms 9 Oct 2025 335th SirBogman 🇺🇸 785 138 39ms 11 Jul 2025 336th Shanethegamer 🇺🇸 784 152 337ms 3 Oct 2024 336th targrik 784 152 342ms 7 Jul 2025 338th annaproxy 782 102 18ms 1 Oct 2024 338th snoozingnewt 🇨🇦 782 102 10ms 6 Dec 2025 338th Flekay 🇩🇪 782 102 18ms 19 Feb 2026 338th dokutan 782 102 19ms 12 Mar 2026 338th aksyristos 782 102 19ms 25 days ago 338th scpchicken 🇵🇼 782 102 17ms 14 days ago 338th vang1ong7ang 782 102 17ms 2 days ago 345th sean-niemann 🇺🇸 782 107 389ms 3 Oct 2024 346th GrayJoKing 🇦🇺 781 82 121ms 1 Oct 2024 347th SirBogman 🇺🇸 780 50 32ms 8 Jul 2025 348th duckyluuk 🇳🇱 780 97 11ms 25 Nov 2025 349th albanian-laundromat 🇺🇸 779 74 772ms 3 Nov 2025 350th m-tkach 🇺🇦 779 131 2ms 4 Oct 2024 351st Shanethegamer 🇺🇸 778 120 536ms 24 Sep 2025 352nd uttumuttu 🇫🇮 777 83 13ms 1 Oct 2024 352nd KatieLG 🇬🇧 777 83 13ms 1 Oct 2024 352nd Larento 777 83 13ms 4 Nov 2024 352nd Andrey-Plotnikov 777 83 13ms 13 Jan 2025 352nd nathanadams 🇳🇿 777 83 11ms 6 Oct 2025 357th adriweb 🇫🇷 777 102 1ms 5 Oct 2024 358th sean-niemann 🇺🇸 777 105 461ms 1 Oct 2024 359th AlephSquirrel 776 124 7ms 21 Oct 2024 360th Natanaelel 🇸🇪 775 143 145ms 20 Apr 2025 361st sisyphus-ppcg 🇦🇺 773 62 36ms 3 Oct 2024 362nd DialFrost 🇸🇬 773 90 2ms 18 Nov 2025 363rd emgordon154 772 83 134ms 18 Nov 2024 364th DialFrost 🇸🇬 772 121 557ms 24 Sep 2025 365th emgordon154 771 197 1,641ms 10 days ago 366th targrik 770 88 8ms 7 Feb 2025 367th Waffle3z 770 103 2ms 2 Oct 2024 368th xsot 🇸🇬 770 125 7ms 20 Oct 2024 369th retrohun 769 63 20ms 2 Oct 2024 370th luuumine 🇫🇷 769 92 1ms 5 Dec 2025 370th bzd7 769 92 2ms 7 Dec 2025 372nd didion0 🇺🇸 768 84 14ms 10 Jan 2025 373rd ovs-code 🇩🇪 768 122 164ms 25 Apr 2025 374th albanian-laundromat 🇺🇸 768 159 32ms 4 days ago 375th lifthrasiir 🇰🇷 767 37 2ms 27 Nov 2024 376th jatloe 767 104 10ms 1 Oct 2024 377th MeWhenI 🇻🇦 767 109 389ms 2 Oct 2024 378th albanian-laundromat 🇺🇸 763 118 90ms 13 Nov 2025 379th Shanethegamer 🇺🇸 763 124 8ms 4 Oct 2024 380th GolfingSuccess 🇬🇷 762 70 6ms 6 Jun 2025 381st MeWhenI 🇻🇦 761 89 6ms 2 Oct 2024 382nd sean-niemann 🇺🇸 761 93 1ms 24 Oct 2024 383rd emgordon154 760 63 38ms 18 Nov 2024 383rd SirBogman 🇺🇸 760 63 37ms 19 Jul 2025 385th fourth-bit 760 105 18ms 1 Oct 2024 385th jared-hughes 760 105 17ms 3 Oct 2024 385th mattyhempstead 760 105 28ms 7 Oct 2024 388th DialFrost 🇸🇬 759 76 802ms 30 Aug 2025 389th weliveinhell 🇭🇹 759 85 10ms 1 Oct 2024 389th SteRoy 759 85 13ms 13 May 2025 391st CLOStrophobic 🇮🇹 758 160 40ms 27 Feb 2025 392nd MeWhenI 🇻🇦 754 88 524ms 2 Oct 2024 392nd albanian-laundromat 🇺🇸 754 88 521ms 3 Nov 2025 394th 0xjac 🇨🇭 754 158 321ms 17 Jun 2025 395th MeWhenI 🇻🇦 754 162 26ms 2 Oct 2024 396th GrayJoKing 🇦🇺 753 90 5ms 1 Oct 2024 397th stefangimmillaro 753 94 1ms 30 Oct 2024 397th emgordon154 753 94 2ms 7 Feb 2026 399th davecame 753 106 18ms 1 Oct 2024 399th starfihs 753 106 11ms 2 Oct 2024 First Prev 301–400 of 943 Next Last