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Number Memory Leaderboard

How many digits can you hold in working memory? Average is 7 - Miller's Law.

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Site Record
16 digits
Global Average
7 digits
Total Scores
7,312,450

All-Time Rankings

Higher is better

digits
Rank Player Location Score
#1
N
numqueen GOLD
🇩🇪 Berlin 16 digits
#2
M
mem_arch SILVER
🇯🇵 Osaka 15 digits
#3
D
digit_king BRONZE
🇺🇸 New York 14 digits
#4
R
ram_512
🇰🇷 Seoul 14 digits
#5
N
numberbrain
🇬🇧 London 13 digits
#6
C
chunker_x
🇳🇱 Amsterdam 13 digits
#7
M
miller_beat
🇦🇺 Melbourne 12 digits
#8
R
recall_9
🇨🇳 Beijing 12 digits
#9
S
seveenplus
🇫🇷 Lyon 11 digits
#10
P
phonoloop
🇸🇬 Singapore 11 digits

Showing 1–10

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Number Memory - Score Guide & Analysis

What is a good Number Memory score?

Level Score Range
Exceptional 12+ digits
Excellent 10–11 digits
Above Avg 8–9 digits
Average 6–7 digits
Below Avg 4–5 digits
Low ≤ 3 digits
🔬

The phonological loop is one of three components of Baddeley's Working Memory Model. It is disproportionately engaged by language and verbal material. Digit span is a standard subtest in clinical batteries like the WAIS-IV.

What does the Number Memory test measure?

Number Memory (digit span) tests your working memory capacity - specifically the phonological loop, which rehearses and temporarily stores verbal information. George Miller's 1956 paper established that most adults can hold 7±2 items, known as "The Magical Number Seven." The sequence gets one digit longer after every successful recall.

How to improve your Number Memory score

  • → Chunk digits into groups of 3 (like a phone number). "149276" becomes "149" + "276."
  • → Sub-vocalize (mentally whisper) the sequence to engage the phonological rehearsal loop.
  • → Consistent daily practice of 10 minutes can increase your span by 1–2 digits within weeks.
  • → Take the test in silence - background speech especially disrupts phonological working memory.
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