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 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 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 ArkScript 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 ArkScript 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 Calendar 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 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 721st dokutan 508 116 746ms 30 Aug 2025 722nd Chinay-Domitrix 🇺🇸 508 131 4,591ms 30 Mar 2025 723rd lhulinsky 508 157 9ms 21 Oct 2024 724th dokutan 507 126 138ms 22 Jun 2025 725th ThatAlo 504 158 10ms 9 Dec 2024 726th osNiko 🇧🇷 503 72 49ms 5 days ago 727th snoozingnewt 🇨🇦 503 142 463ms 2 Nov 2025 728th Andrey2001 502 132 629ms 27 Nov 2025 729th msbranicky 501 138 3ms 3 Oct 2024 730th webmiche 501 159 10ms 3 Nov 2025 731st jlangvand 500 141 2ms 15 Oct 2024 731st HumanoidCPU 500 141 1ms 7 Mar 2025 733rd blaztoma 🇱🇹 500 154 109ms 28 Nov 2025 734th MeWhenI 🇻🇦 499 149 56ms 4 Oct 2024 735th janAkali 🇷🇺 499 167 357ms 8 Oct 2024 736th Mabeloid 🇳🇴 498 133 566ms 2 Oct 2024 737th CheeseCake628 🇳🇴 498 160 102ms 5 Nov 2024 738th pres-abhisheksinha 495 161 10ms 8 Oct 2024 739th HumanoidCPU 492 145 479ms 5 Oct 2024 740th CarterStroik 492 161 2ms 19 Nov 2025 741st ibixina 492 162 9ms 13 Oct 2024 741st TheAtrossian 492 162 10ms 5 Jan 2025 743rd TheRealOhead 🇺🇸 491 131 10ms 1 Oct 2024 744th snoozingnewt 🇨🇦 490 150 154ms 2 Nov 2025 745th h-hh-hhh 🇺🇦 488 177 59ms 2 Nov 2024 746th JunkIce 487 136 563ms 3 Dec 2024 747th snoozingnewt 🇨🇦 487 249 26ms 2 Nov 2025 748th snoozingnewt 🇨🇦 486 117 1,313ms 2 Nov 2025 749th Vaekor 483 165 10ms 15 Dec 2024 750th snoozingnewt 🇨🇦 482 173 332ms 2 Nov 2025 751st alphafalfa 480 92 2ms 8 Nov 2024 752nd mitzal 480 180 61ms 9 Feb 2025 753rd h-hh-hhh 🇺🇦 479 147 2ms 2 Nov 2024 754th MiffOttah 476 150 457ms 6 Oct 2024 754th mwarvik 🇳🇴 476 150 450ms 15 days ago 756th JesseNoEyes 🇺🇸 472 169 10ms 1 Oct 2024 757th luca1339 471 198 371ms 4 Nov 2024 758th Maximizer02 471 201 11ms 1 Oct 2024 759th iczelia 🇩🇪 470 94 2ms 23 Sep 2025 760th ejini6969 469 102 37ms 14 Jun 2025 761st zyc-2024 🇨🇳 469 170 9ms 5 Oct 2024 762nd ComputerKWasTaken 🇺🇸 466 171 10ms 14 Oct 2024 763rd snoozingnewt 🇨🇦 466 200 228ms 2 Nov 2025 764th snoozingnewt 🇨🇦 464 121 197ms 27 Nov 2025 765th Jacob385 462 202 358ms 2 Oct 2024 766th navier-1 461 173 11ms 22 Sep 2025 767th snoozingnewt 🇨🇦 460 96 2ms 2 Nov 2025 768th madex 🇩🇪 460 104 38ms 2 Oct 2024 769th TheZwierzLF 🇵🇱 455 105 38ms 8 days ago 770th snoozingnewt 🇨🇦 454 149 4ms 2 Nov 2025 771st IISResetMe 453 103 590ms 27 Nov 2025 772nd clayboll99 453 176 10ms 10 Jul 2025 773rd dokutan 451 63 3ms 26 Nov 2024 774th snoozingnewt 🇨🇦 450 176 2ms 2 Nov 2025 775th Upload-and-View 🇺🇦 450 177 17ms 9 Aug 2025 776th varhammer 🇷🇺 450 223 11ms 23 Feb 2025 777th OSYCh314 🇦🇺 448 178 10ms 2 Nov 2024 778th dokutan 445 109 10ms 19 Oct 2024 779th grey0ut 444 105 472ms 11 Jan 2025 780th calum12345 443 180 10ms 26 Mar 2025 781st MyXoToD 🇩🇪 441 146 9ms 26 May 2025 782nd Yewzir 🇧🇪 440 171 13ms 26 Dec 2024 783rd CheeseCake628 🇳🇴 439 151 497ms 18 Oct 2025 784th zt14427 438 182 10ms 27 Dec 2024 785th IoLimmer 435 183 9ms 10 Oct 2024 786th JOrE20 🇺🇸 434 136 754ms 7 Dec 2025 787th KatieLG 🇬🇧 433 183 2ms 2 Oct 2025 788th aksyristos 433 184 16ms 15 Nov 2024 789th snoozingnewt 🇨🇦 432 267 28ms 18 Dec 2025 790th KatieLG 🇬🇧 431 108 6ms 13 Oct 2024 791st snoozingnewt 🇨🇦 431 111 38ms 2 Nov 2025 792nd estomagordo 🇳🇱 428 186 10ms 15 Jul 2025 793rd dokutan 425 132 302ms 3 Oct 2024 794th MeWhenI 🇻🇦 424 143 6ms 2 Oct 2024 795th Arkadios200 417 196 98ms 21 Oct 2025 796th aksyristos 410 172 2ms 23 Nov 2025 797th dieggsy 406 247 18ms 10 Oct 2024 798th snoozingnewt 🇨🇦 406 313 40ms 2 Nov 2025 799th Mabeloid 🇳🇴 405 159 9ms 12 Oct 2024 800th snoozingnewt 🇨🇦 404 223 82ms 2 Nov 2025 First Prev 721–800 of 865 Next Last