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 Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator 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 Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator 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 881st sciencejiho 359 197 2ms 11 Feb 2025 882nd The-Wolfson 356 230 111ms 16 Dec 2024 883rd Zhenyu-Bo 350 228 11ms 30 Jul 2025 884th EthanJantz 347 230 12ms 5 Sep 2025 885th RobGLambert 344 273 200ms 8 Jun 2025 886th Inbarw100 342 207 2ms 13 days ago 887th Ernest1338 341 275 303ms 26 Oct 2024 888th noahhorlacher 338 191 15ms 7 Dec 2024 889th RobertBurs 337 237 11ms 22 Sep 2025 890th jusaka 331 216 400ms 40 hours ago 891st TJK-S 331 241 12ms 25 Oct 2025 891st NoneTheFewer 331 241 11ms 25 Dec 2025 893rd jusaka 325 150 12ms 38 hours ago 894th JOrE20 316 389 56ms 4 Dec 2025 895th te-chnical 309 258 222ms 4 May 2025 896th snoozingnewt 🇨🇦 305 200 4ms 2 Nov 2025 897th KatieLG 🇬🇧 300 290 2,606ms 1 Oct 2025 898th kasarino 295 240 2ms 8 Feb 2026 899th KatieLG 🇬🇧 294 241 2ms 1 Oct 2025 900th jusaka 290 234 90ms 41 hours ago 901st jusaka 289 275 2ms 43 hours ago 902nd fantaize 284 330 211ms 10 Mar 2026 903rd ReterikHub 281 310 210ms 17 Jan 2025 904th Mikey-Beep 🇬🇧 276 349 16ms 12 Aug 2025 905th jusaka 275 243 2,488ms 41 hours ago 906th jusaka 275 435 347ms 41 hours ago 907th MeWhenI 🇻🇦 273 407 119ms 6 Oct 2024 908th jusaka 273 425 82ms 31 hours ago 909th arebbsba 269 296 10ms 9 Jan 2025 910th kasarino 267 299 11ms 8 Feb 2026 911th jusaka 261 205 10ms 37 hours ago 912th jusaka 261 271 3ms 41 hours ago 913th kasarino 260 373 44ms 8 Feb 2026 914th benanlam 249 320 12ms 21 Dec 2025 915th jusaka 249 336 399ms 40 hours ago 916th jusaka 243 421 4ms 39 hours ago 917th jusaka 242 507 29ms 39 hours ago 918th jusaka 239 309 204ms 39 hours ago 919th jusaka 238 183 2ms 19 hours ago 920th jusaka 234 414 4ms 19 hours ago 921st jusaka 233 388 90ms 41 hours ago 922nd jusaka 230 309 5ms 37 hours ago 923rd jusaka 229 280 153ms 26 hours ago 924th jusaka 227 361 148ms 41 hours ago 925th jusaka 224 254 1,457ms 40 hours ago 926th jusaka 223 163 63ms 35 hours ago 927th jusaka 216 446 25ms 38 hours ago 928th jusaka 213 225 38ms 43 hours ago 929th jusaka 212 575 45ms 38 hours ago 930th jusaka 211 390 188ms 40 hours ago 931st jusaka 207 189 34ms 35 hours ago 932nd Msleizak 🇫🇷 207 226 262ms 19 May 2025 933rd jusaka 199 556 29ms 40 hours ago 934th jusaka 192 467 1,371ms 40 hours ago 935th jusaka 192 488 224ms 41 hours ago 936th jusaka 188 286 81ms 26 hours ago 937th jusaka 187 250 268ms 19 hours ago 938th jusaka 186 449 7ms 26 hours ago 939th jusaka 185 329 5ms 19 hours ago 940th jusaka 185 366 6ms 41 hours ago 941st jusaka 184 307 249ms 40 hours ago 942nd jusaka 182 528 17ms 19 hours ago 943rd jusaka 180 387 110ms 41 hours ago 944th jusaka 177 365 11ms 43 hours ago 945th jusaka 172 337 1,983ms 40 hours ago 946th jusaka 172 450 131ms 40 hours ago 947th jusaka 170 512 1,460ms 41 hours ago 948th jusaka 169 985 1,436ms 39 hours ago 949th jusaka 168 415 3ms 32 hours ago 950th jusaka 167 568 10ms 40 hours ago 951st jusaka 161 246 3ms 43 hours ago 952nd jusaka 156 244 140ms 37 hours ago 953rd theEsteemed 154 606 407ms 20 Jan 2026 954th AidanWalter 148 540 11ms 1 Jan 2025 955th jusaka 146 744 46ms 39 hours ago 956th jusaka 131 1,469 14ms 19 hours ago 957th bignamehyp 120 667 11ms 14 Nov 2024 958th vkptimon 120 776 422ms 9 Jul 2025 959th jusaka 116 643 8ms 36 hours ago 960th dokutan 61 2,475 120ms 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