What is 7?

7 is a fascinating number with significance across various fields. Here's a breakdown:

• Mathematics: 7 is a prime number, meaning it's only divisible by 1 and itself. It is the 4th prime number.
• 7 is a Mersenne prime exponent.
• It's also a Heegner number.
• Religion & Mythology: In many cultures, 7 holds symbolic meaning. For example, the Bible describes God resting on the seventh day. The concept of the Seven Deadly Sins is prevalent in Christian theology.
• Culture: There are the Seven Wonders of the Ancient World. Snow White and the Seven Dwarfs is a famous fairy tale. James Bond's codename is "007".
• Science: The atomic number of Nitrogen is 7.
• Music: The diatonic scale consists of seven notes.
• Everyday Life: Many things come in sets of seven, such as the days of the week. Rainbow has seven colors.