ELI5: What is the Riemann Hypothesis?
Imagine you're listening to music. The music is made up of different notes, and each note has a certain pitch. Some notes are high, some are low.
Now, think about prime numbers (numbers that can only be divided by 1 and themselves, like 2, 3, 5, 7, 11). Prime numbers are like the "atoms" of numbers, because all other numbers can be made by multiplying primes together.
Mathematicians have found that prime numbers are not spread out randomly. They follow a pattern, like notes in a song. The Riemann Hypothesis is a guess about what that pattern is.
A long time ago, a mathematician named Riemann created a special function (like a recipe in math) called the "Zeta function". This function is like a magical music player that plays a special song. The "notes" of this song are the prime numbers.
The Riemann Hypothesis is a guess about where the "silent" spots are in this special song. The silent spots are the places where the music player is "at rest" (the function is equal to zero). Riemann guessed that all the interesting silent spots are on a single straight line, like notes on a musical staff.
If the Riemann Hypothesis is true, it would tell us a lot about how prime numbers are spread out. It would be like having a map of all the prime numbers, showing us where they are and how they relate to each other.
Why is this important? Because prime numbers are used in many things, like keeping your computer and your bank account safe. Understanding them better would help us create even more secure ways to protect our information.