Cryptic crossword clue
Memorable number? 13

The most common and most likely answer to this crossword clue is the 13 letter word UNFORGETTABLE

I've seen this crossword clue in The Guardian
U
N
F
O
R
G
E
T
T
A
B
L
E

Buddy explains!

The straight part
We know that "Memorable number/Memorable/number" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case memorable number/memorable/number = unforgettable.
The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.
This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.

What does UNFORGETTABLE mean?

UNFORGETTABLE adjective
  1. Very difficult or impossible to forget

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