📜 Theorem, law or theory

Prime number theorem

Teorema de los números primos

Date
1896 · confidence high
Place
Paris and Leuven
Credited to
Jacques Hadamard and Charles-Jean de la Vallée Poussin (independent)
People
👤 Charles-Jean de la Vallée Poussin1866–1962👤 Jacques Hadamard1865–1963
Field
Knowledge & symbols

⚠️ Disputed: the sources disagree.

What was discovered

The number of primes less than x is asymptotically x / ln x, as conjectured by Gauss and Legendre. Proved by showing that zeta does not vanish on the line of real part 1, it is the greatest success of 19th-century analytic number theory.

A simultaneous and independent discovery; in 1949 Selberg and Erdős gave an elementary proof amid a bitter priority dispute.

What it led to

  • analytic number theory
  • prime density estimates for cryptography
  • the elementary proofs of Selberg and Erdős (1949)
🕸️ View in the graph

Built on

Made possible

  • RSA key generation (abundance of primes)

📄 Original publication

Sur la distribution des zéros de la fonction $\zeta(s)$ et ses conséquences arithmétiquesJ. Hadamard · Bulletin de la Société mathématique de France · 1896

Links

Sources✓ verified 2026-09-25