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Card Number Validation in all languages in chars. 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 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 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 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 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 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 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 Chars Time Submitted 801st snoozingnewt 🇨🇦 411 267 29ms 18 Dec 2025 802nd ThatAlo 409 158 10ms 9 Dec 2024 803rd webmiche 406 159 11ms 3 Nov 2025 804th Mabeloid 🇳🇴 405 159 10ms 12 Oct 2024 805th CheeseCake628 🇳🇴 404 160 104ms 5 Nov 2024 806th snoozingnewt 🇨🇦 404 223 82ms 2 Nov 2025 807th pres-abhisheksinha 401 161 10ms 8 Oct 2024 808th aksyristos 400 172 2ms 23 Nov 2025 809th ibixina 399 162 11ms 13 Oct 2024 809th TheAtrossian 399 162 11ms 5 Jan 2025 811th Ralac07 🇦🇺 398 162 15ms 3 Oct 2024 812th Maximizer02 396 201 11ms 1 Oct 2024 813th dieggsy 393 247 18ms 10 Oct 2024 814th Vaekor 392 165 11ms 15 Dec 2024 815th snoozingnewt 🇨🇦 392 276 40ms 6 Dec 2025 816th fischfood 385 176 4ms 22 Oct 2024 817th JOrE20 385 191 109ms 27 Jan 2026 818th ehulinsky 🇺🇸 384 158 5ms 2 Apr 2025 819th JesseNoEyes 🇺🇸 382 169 11ms 1 Oct 2024 820th CheeseCake628 🇳🇴 381 151 521ms 18 Oct 2025 821st zyc-2024 🇨🇳 380 170 10ms 5 Oct 2024 822nd ComputerKWasTaken 🇺🇸 378 171 10ms 14 Oct 2024 823rd KatieLG 🇬🇧 375 218 120ms 21 Nov 2025 824th RobGLambert 375 232 1,323ms 8 Jun 2025 825th navier-1 374 173 10ms 22 Sep 2025 826th c0d3-4-F00d 🇩🇪 374 184 2ms 9 Jan 2025 827th RedzGoose 🇦🇺 371 187 109ms 2 Oct 2024 828th P1nk-P0nk 369 215 3ms 18 Oct 2024 829th clayboll99 367 176 10ms 10 Jul 2025 830th muser-logiccpu 🇺🇦 365 177 18ms 9 Aug 2025 831st snoozingnewt 🇨🇦 364 313 40ms 2 Nov 2025 832nd OSYCh314 🇦🇺 363 178 10ms 2 Nov 2024 833rd snoozingnewt 🇨🇦 363 267 13ms 2 Nov 2025 834th calum12345 359 180 10ms 26 Mar 2025 835th zt14427 355 182 11ms 27 Dec 2024 836th The-Wolfson 355 230 104ms 16 Dec 2024 837th IoLimmer 353 183 10ms 10 Oct 2024 838th aksyristos 351 184 21ms 15 Nov 2024 839th sciencejiho 349 197 2ms 11 Feb 2025 840th estomagordo 🇳🇱 347 186 10ms 15 Jul 2025 841st RobGLambert 342 273 201ms 8 Jun 2025 842nd Ernest1338 339 275 274ms 26 Oct 2024 843rd noahhorlacher 337 191 10ms 7 Dec 2024 844th JOrE20 312 389 56ms 4 Dec 2025 845th snoozingnewt 🇨🇦 303 200 4ms 2 Nov 2025 846th KatieLG 🇬🇧 300 290 2,497ms 1 Oct 2025 847th gautambp 296 218 11ms 24 Jun 2025 848th kasarino 287 240 2ms 20 days ago 849th KatieLG 🇬🇧 286 241 2ms 1 Oct 2025 850th Zhenyu-Bo 283 228 11ms 30 Jul 2025 851st EthanJantz 281 230 11ms 5 Sep 2025 852nd ReterikHub 280 310 211ms 17 Jan 2025 853rd RobertBurs 273 237 10ms 22 Sep 2025 854th Mikey-Beep 🇬🇧 273 349 17ms 12 Aug 2025 855th MeWhenI 🇻🇦 272 407 119ms 6 Oct 2024 856th TJK-S 268 241 11ms 25 Oct 2025 856th NoneTheFewer 268 241 11ms 25 Dec 2025 858th kasarino 258 373 44ms 20 days ago 859th te-chnical 251 258 219ms 4 May 2025 860th arebbsba 218 296 11ms 9 Jan 2025 861st kasarino 216 299 11ms 20 days ago 862nd Msleizak 🇫🇷 206 226 280ms 19 May 2025 863rd benanlam 202 320 10ms 21 Dec 2025 864th theEsteemed 154 606 472ms 20 Jan 2026 865th AidanWalter 120 540 10ms 1 Jan 2025 866th vkptimon 120 776 422ms 9 Jul 2025 867th bignamehyp 97 667 10ms 14 Nov 2024 868th dokutan 60 2,474 116ms 18 Aug 2025 869th iczelia 🇩🇪 52 2,045 4ms 14 Oct 2025 870th lyphyser 0 15 33ms 25 May 2025 870th 2bular 0 15 32ms 14 days ago 870th Natanaelel 🇸🇪 0 15 35ms 11 days ago 873rd namelessiw 0 16 141ms 19 Nov 2025 873rd darrenks 🇺🇸 0 16 33ms 14 days ago 875th lyxal 🇦🇺 0 18 666ms 17 May 2025 875th themoonisacheese 0 18 748ms 13 Jun 2025 875th plcc0 0 18 35ms 13 days ago 878th kg583 🇺🇸 0 20 265ms 14 May 2025 878th jshholland 0 20 1,326ms 9 days ago 880th plcc0 0 30 97ms 31 Jan 2026 First Prev 801–880 of 899 Next Last