Leap Years in JavaScript 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 389th Yareeeema 678 59 9ms 11 Oct 2023 389th iCyuba 678 59 9ms 15 Oct 2023 389th Palladium02 678 59 8ms 26 May 2025 404th ciaranmag 667 60 9ms 25 Jan 2019 404th TTWNO 667 60 9ms 8 Apr 2019 404th islonely 667 60 11ms 26 Apr 2019 404th florton 667 60 9ms 19 Mar 2021 404th peculiarination 667 60 9ms 30 Apr 2021 404th baby-steve 667 60 9ms 5 May 2021 404th BillyBobFry 667 60 10ms 22 Oct 2021 404th gurglemurgle5 667 60 10ms 15 Feb 2022 404th mayrop 667 60 11ms 4 Nov 2022 404th janleigh 🇵🇭 667 60 11ms 23 Sep 2023 404th xShadowBlade 667 60 9ms 19 May 2024 415th Pandapip1 656 61 9ms 11 Feb 2021 415th evalPenny 🇰🇷 656 61 9ms 6 Jul 2021 415th scottjones4k 656 61 9ms 5 Jul 2022 418th ptforness 645 62 9ms 1 Jan 2023 419th vidmantasa 635 63 9ms 23 Sep 2021 419th jamespeilunli 635 63 10ms 20 Mar 2022 419th adamnielson42 🇺🇸 635 63 8ms 24 Apr 2023 419th notesz5 635 63 9ms 5 Sep 2023 419th Voltrifrodec 🇸🇰 635 63 9ms 23 Apr 2025 419th MyXoToD 🇩🇪 635 63 9ms 20 May 2025 425th TrAyZeN 625 64 9ms 19 Aug 2019 425th yencis 625 64 9ms 18 Feb 2020 425th ahorihan 625 64 9ms 3 Aug 2022 425th Dddatt 625 64 10ms 22 Jan 2025 429th shreyasminocha 615 65 10ms 2 Aug 2020 429th lucipas 615 65 10ms 10 May 2024 431st effin 606 66 8ms 10 May 2019 431st MaartenStaa 606 66 9ms 5 Jan 2020 431st Designer023 606 66 9ms 8 Feb 2020 431st JustinDowty 606 66 10ms 12 Jun 2020 431st SebassNoob 606 66 10ms 5 Aug 2025 436th jonot-cyber 597 67 12ms 16 Jun 2019 436th WilleyOhana 597 67 9ms 26 Feb 2021 436th davyboyhayes 597 67 9ms 24 Jan 2023 439th tadeokondrak 588 68 9ms 22 Feb 2019 439th OmegaB0t 588 68 8ms 5 Dec 2019 441st marekMin 580 69 10ms 11 Jun 2019 441st jayanwar 580 69 10ms 5 Nov 2019 443rd null-tangent 571 70 9ms 3 Aug 2022 443rd ShepardToTheStars 571 70 9ms 5 Jan 2024 445th squadb3 548 73 9ms 11 Oct 2019 445th ABoxAlt 548 73 8ms 16 Nov 2023 447th tickct 541 74 10ms 12 Sep 2019 447th Scoutboy06 541 74 10ms 9 Dec 2019 447th James-revans 541 74 10ms 30 Dec 2019 447th AlexOgn 541 74 9ms 26 Dec 2020 447th E2dgar 541 74 9ms 31 Jan 2022 447th aneurin-h 541 74 9ms 15 Nov 2022 447th dpb4 541 74 8ms 27 Feb 2024 447th tik25 541 74 9ms 28 Mar 2024 455th Bejofo 533 75 9ms 17 Mar 2021 455th dukeaccent 🇫🇮 533 75 9ms 29 Nov 2022 457th Hyperoplex145 526 76 10ms 3 Dec 2025 458th joedia 513 78 10ms 2 Jan 2021 459th ershadi-sayuri 506 79 9ms 14 Jan 2022 460th Randomness74 500 80 9ms 14 Mar 2020 461st Sixaintnine 494 81 9ms 20 Feb 2020 462nd Havock94 488 82 9ms 14 Aug 2019 463rd RoscoeDaWah 🇬🇧 482 83 9ms 13 Feb 2022 463rd AshishAntil07 482 83 9ms 10 Oct 2022 465th dbkirk4211 460 87 9ms 4 May 2024 466th ThePyProgrammer 449 89 9ms 15 Dec 2021 467th DanSmelly 426 94 10ms 1 May 2020 468th heigertd 400 100 9ms 30 Dec 2019 469th NoneTheFewer 392 102 10ms 27 Dec 2025 470th nico-bachner 377 106 9ms 5 Dec 2020 470th Pyro569 377 106 8ms 3 Nov 2023 472nd gdickison 360 111 9ms 21 Dec 2018 473rd hacker19374 345 116 9ms 8 Mar 2023 473rd kevinnaviapaiva 345 116 10ms 6 Mar 2025 475th ialap206 294 136 9ms 17 Jun 2023 476th icottambbc 247 162 9ms 18 Nov 2020 477th seanleken 194 206 11ms 7 Oct 2019 478th JRaspass 🇬🇧 54 736 9ms 7 Jul 2020 479th KatieLG-Transpiler 🇬🇧 54 738 9ms 23 Jun 2022 480th retrohun 45 883 10ms 21 Dec 2018 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