Number Memory Test

A number flashes on screen. Remember it, then type it in. Each level adds one digit.

How this test works

At level 1 you see a single digit for a moment, then type it. At level 2 you see two digits, and so on. The display time grows slowly with each level, but not as fast as the number does. One wrong answer ends the run and your score is the longest number you got right.

About the score

Short-term memory for digits varies between people and between days. A long-standing rule of thumb says people often manage somewhere around seven items, give or take a couple, but that figure comes from lab studies with different set-ups, so treat it as a loose reference rather than a target. Our labels are just for fun:

Tips

Try splitting the number into groups of two or three digits, the way phone numbers are written, and say each group quietly to yourself. Looking at the screen as a whole rather than digit by digit also helps some people.

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