Landau-Ramanujan constant English

Meaning Landau-Ramanujan constant meaning

What does Landau-Ramanujan constant mean?

Landau-Ramanujan constant properNoun

— (number theory) The constant of proportionality (approximately 0.7642) in the relationship between the number of positive integers less than x that are the sum of two square numbers, for large x, and the expression x/{\sqrt{\ln(x)}}.