Reaction Time
How fast can you react to a visual signal?
Start TestMemory benchmark
Number Memory
How many digits can you remember? Memorize each number before it disappears, then type it from memory.
Level 11 digit
123
Number Memory
Memorize increasingly longer numbers.
The number disappears before entry. Type the exact digits from memory; pasting is disabled.
Understanding the benchmark
What is Number Memory?
Number Memory is a progressive recall challenge. A digit sequence appears briefly, disappears, and must then be entered exactly. Each successful round adds one digit. The test is intended for personal comparison and entertainment, not as a medical, neurological, or IQ assessment.
How does the test work?
Level 1 begins with one digit. Every correct answer advances exactly one level and adds one digit. After the number disappears, enter the complete sequence as a string. The first incorrect submitted answer ends the attempt, and the failed level does not count toward the final score.
The score
How is the score calculated?
The final score is the highest level answered correctly. For example:
Levels 1–8 correct
Level 9 incorrect
Final score: 8 digits
Sequences remain strings from generation through comparison, so long values and internal zeros are never changed by numeric parsing or JavaScript integer precision.
Viewing time
Why does display time change?
Longer sequences need more time to read. ReflexMint begins with a short minimum, adds 350 milliseconds per digit, and caps viewing time at eight seconds. There is no distracting numerical countdown; the sequence remains the visual focus.
The entire benchmark has no fixed duration. Correct answers continue to the next level until the first incorrect submission.
Context matters
Why can results differ?
Concentration and distractions. Interruptions and divided attention can make a sequence harder to retain.
Display and device. Screen size, viewing distance, and input method affect reading and entry comfort.
Fatigue and repetition. Results can vary across the day and during repeated attempts.
Strategy. Some people prefer individual digits, while others naturally group a sequence into smaller chunks.
Improve consistency
Tips for consistent results
- Keep the benchmark tab visible throughout each round.
- Reduce nearby distractions before starting an attempt.
- Use the same device when comparing personal results.
- Group digits mentally if that feels comfortable and natural.
- Compare several completed attempts rather than one isolated score.
- Take short breaks during repeated practice.
This benchmark does not measure IQ and should not be used for medical, cognitive, or diagnostic conclusions.
Common questions
Number Memory FAQ
What is the Number Memory test?+
It is a browser benchmark that briefly displays a digit sequence, hides it, and asks you to enter the exact number from memory.
How is my score calculated?+
Your score is the longest digit length you completed correctly. If Levels 1 through 8 are correct and Level 9 is incorrect, your score is 8 digits.
What happens when I enter the wrong number?+
The attempt ends, and the result shows the correct sequence beside your submitted answer. The failed level is not counted as completed.
Why does the number disappear?+
Hiding the sequence separates viewing from recall. Once the answer phase starts, the displayed number is removed from the benchmark presentation.
Does the display time increase with longer numbers?+
Yes. Each extra digit adds moderate viewing time, up to an eight-second cap, so longer sequences receive more reading time without remaining visible indefinitely.
Can I use the test on my phone?+
Yes. The answer uses a real text input with numeric input mode, although mobile browsers may require a tap before opening the virtual keyboard.
Can I paste the answer?+
No. Pasting and dropped text are blocked so the answer must be entered through the normal typing or mobile keyboard path.
Why did my test pause when I changed tabs?+
Leaving the tab during the display or answer phase cancels the attempt because the round timing and recall conditions are no longer consistent.
Is Number Memory an IQ test?+
No. It is a casual ReflexMint memory challenge, not an IQ test, medical assessment, neurological test, or diagnostic tool.
Does a higher score mean better performance?+
Within this benchmark, a higher completed digit length is better. Results can still vary with concentration, device, fatigue, strategy, and distractions.
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