What is the memory technique called that helps remember long series of numbers?

Chunking is a memory technique that involves breaking down large amounts of information, such as long series of numbers, into smaller, more manageable units or "chunks." By organizing data into these smaller components, the brain can process and recall the information more effectively. For example, a phone number might be grouped into segments (e.g., 123-456-7890) instead of memorizing all ten digits at once. This method leverages the brain's natural ability to recognize patterns and improves retention, making it easier to remember and retrieve the information later.