landau's problems
Word Rarity
Very rare
Frequency: Zipf frequency 1.27 in modern English
22
Scrabble Score
15
Letters
3
Syllables
12
Unique Chars
Meaning
name
Four basic unsolved problems about prime numbers: (i) is Goldbach's conjecture true?; (ii) is the twin prime conjecture true?; (iii) is Legendre's conjecture true?; (iv) are there infinitely many primes p such that p − 1 is a perfect square?