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Number Memory Test

Memorize the number, then type it back. How many digits can you reach?

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How this number memory test works

Each round shows a number for a short time, based on its length, before hiding it. Type the number back exactly. Get it right and the next number gains a digit; get it wrong and the test ends, showing the longest number you correctly recalled.

Frequently asked questions

How does the number memory test work?
You'll briefly see a number on screen. Once it disappears, type it back from memory. Each correct answer adds one more digit to the next number. The test ends on your first mistake.
What is a good number memory score?
The average person can reliably recall 7 plus or minus 2 digits, a finding known as Miller's Law. Scores of 10+ digits are considered very strong short-term memory.
Any tips to remember more digits?
Chunking digits into small groups (like phone numbers) and repeating them silently as you view them can help extend how many digits you can hold in short-term memory.