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 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 Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers 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 ><> ALGOL 68 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 ArkScript 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 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 ArkScript 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 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 Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers 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 719th RodAlc24 🇪🇸 535 149 17ms 15 days ago 722nd msbranicky 533 175 162ms 13 Dec 2024 723rd deancureton 532 121 11ms 30 Dec 2024 724th FlorianCassayre 🇫🇷 532 150 18ms 1 Oct 2024 724th jameswmccarty 532 150 10ms 5 Oct 2024 724th yousefalizadeh 532 150 10ms 23 Oct 2024 724th feherd 532 150 11ms 31 Oct 2024 724th kadamkaustubh 532 150 10ms 8 Nov 2025 729th msbranicky 530 126 2,523ms 9 Jan 2025 730th adamnielson42 🇺🇸 525 152 10ms 6 Oct 2024 730th voidgloom 525 152 10ms 22 Oct 2024 730th omero-san 525 152 10ms 22 Sep 2025 730th brochmann 🇸🇪 525 152 10ms 12 Oct 2025 734th Macweese 525 178 405ms 3 Aug 2025 735th isaiah0311 🇺🇸 523 135 2ms 9 Feb 2026 736th galloj 🇨🇿 522 112 19ms 4 Oct 2024 737th TheZwierzLF 🇵🇱 522 127 507ms 12 Dec 2025 738th xyangst 521 153 11ms 1 Oct 2024 738th denisfouchard 521 153 10ms 21 Aug 2025 740th snoozingnewt 🇨🇦 520 213 138ms 2 Nov 2025 741st bac0id 519 180 388ms 9 Jan 2025 742nd osNiko 🇧🇷 518 154 9ms 21 Aug 2025 743rd sidok 515 109 248ms 13 Nov 2024 744th Andrey2001 514 129 525ms 1 Feb 2026 745th dokutan 514 143 210ms 19 Oct 2024 746th robin-scragg 514 155 11ms 21 Aug 2025 746th celiendonze 🇨🇭 514 155 10ms 17 Oct 2025 746th aksyristos 514 155 10ms 16 hours ago 749th nephila-nacrea 🇬🇧 511 77 3ms 2 Oct 2024 750th travisdoesmath 511 156 10ms 7 Sep 2025 750th Shotokhan 511 156 10ms 21 Sep 2025 752nd KatieLG 🇬🇧 510 140 436ms 1 Oct 2024 753rd yoshykai 510 183 374ms 12 Apr 2025 754th Chinay-Domitrix 🇺🇸 509 131 2,347ms 30 Mar 2025 755th KatieLG 🇬🇧 509 146 9ms 2 Oct 2024 756th lhulinsky 508 157 10ms 21 Oct 2024 757th dokutan 507 126 155ms 22 Jun 2025 758th dokutan 506 114 804ms 17 days ago 759th ThatAlo 505 158 10ms 9 Dec 2024 760th osNiko 🇧🇷 503 72 51ms 11 Jan 2026 761st msbranicky 503 138 3ms 3 Oct 2024 762nd snoozingnewt 🇨🇦 503 142 463ms 2 Nov 2025 763rd jlangvand 501 141 1ms 15 Oct 2024 763rd HumanoidCPU 501 141 1ms 7 Mar 2025 765th webmiche 501 159 11ms 3 Nov 2025 766th blaztoma 🇱🇹 500 154 119ms 28 Nov 2025 767th Mabeloid 🇳🇴 499 133 538ms 2 Oct 2024 768th MeWhenI 🇻🇦 499 149 56ms 4 Oct 2024 769th CheeseCake628 🇳🇴 498 160 104ms 5 Nov 2024 770th pres-abhisheksinha 495 161 10ms 8 Oct 2024 771st CarterStroik 493 161 2ms 19 Nov 2025 772nd TheRealOhead 🇺🇸 492 131 11ms 1 Oct 2024 773rd HumanoidCPU 492 145 414ms 5 Oct 2024 774th ibixina 492 162 11ms 13 Oct 2024 774th TheAtrossian 492 162 11ms 5 Jan 2025 776th h-hh-hhh 🇺🇦 491 177 56ms 2 Nov 2024 777th snoozingnewt 🇨🇦 491 249 26ms 2 Nov 2025 778th snoozingnewt 🇨🇦 490 150 228ms 2 Nov 2025 779th JunkIce 488 136 510ms 3 Dec 2024 780th snoozingnewt 🇨🇦 486 117 1,338ms 2 Nov 2025 781st Vaekor 483 165 11ms 15 Dec 2024 782nd mitzal 483 180 59ms 9 Feb 2025 783rd snoozingnewt 🇨🇦 482 173 377ms 2 Nov 2025 784th h-hh-hhh 🇺🇦 480 147 1ms 2 Nov 2024 785th denkyuu1 479 100 34ms a min ago 786th MiffOttah 476 150 446ms 6 Oct 2024 786th mwarvik 🇳🇴 476 150 439ms 1 Jan 2026 788th alphafalfa 472 92 2ms 8 Nov 2024 789th JesseNoEyes 🇺🇸 472 169 11ms 1 Oct 2024 790th luca1339 472 198 425ms 4 Nov 2024 791st Maximizer02 471 201 11ms 1 Oct 2024 792nd ejini6969 469 102 37ms 14 Jun 2025 793rd zyc-2024 🇨🇳 469 170 10ms 5 Oct 2024 794th jbjd 468 151 2ms 4 Feb 2026 795th ComputerKWasTaken 🇺🇸 466 171 10ms 14 Oct 2024 796th snoozingnewt 🇨🇦 466 200 240ms 2 Nov 2025 797th snoozingnewt 🇨🇦 464 121 229ms 27 Nov 2025 798th iczelia 🇩🇪 462 94 2ms 23 Sep 2025 799th Jacob385 462 202 418ms 2 Oct 2024 800th navier-1 461 173 10ms 22 Sep 2025 First Prev 721–800 of 906 Next Last