145 is a curious number, as 1! + 4! + 5! = 1 + 24 + 120 = 145
The aim is to find the sum of all numbers which are equal to the sum of the factorial of their digits.
Note: As 1! = 1 and 2! = 2 are not sums, they are not included.
Information at Project Euler 034
Getting Started
Click on the Show Solution Button to show the solution. Click on the Hide Solution Button to hide the solution.
User Stories
As a user, I can show or hide the solution.
As a user, I expect the function digitFactorial() to return an object.
As a user, I expect the function digitFactorial() to return {sum: 40730, numbers: [145,40585]}
As a user, I expect the sum to be 40730 and the numbers to be 145, 40585.
Information Architecture
The function digitFactorial() returns an object, whose structure is:
{ sum: number, numbers: array (number) }
To view object properties, use the form of objectName.propertyName.
digitFactorial().sum is a number
digitFactorial().numbers is an array of numbers
Allows the user to show or hide the solution as described in Project Euler 034.
Uses HTML5, CSS3, JavaScript, Bootstrap 5.2.0 and Google Fonts.
Ensure all user stories have been met.
Deployed on GitHub Pages at the main branch.
Written by me.