fermat number
Word Rarity
Very rare
Frequency: Zipf frequency 2.12 in modern English
21
Scrabble Score
12
Letters
3
Syllables
9
Unique Chars
Meaning
noun
An integer which is one more than two raised to a power which is itself a power of two (i.e., is expressible in the form 2^(2ⁿ)+1 for some n>0); equivalently, a number that is one more than two raised to some power (is expressible as 2ⁿ+1) and is prime.