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Conjecture

Andrica's Conjecture

Number Theory

Andrica's conjecture, named after Romanian mathematician Dorin Andrica who proposed it in 1986, is a conjecture about the gaps between consecutive prime numbers, bounding how quickly the square roots of successive primes can grow apart. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/

Facts
Statement
For the n-th prime p_n, the inequality sqrt(p_(n+1)) - sqrt(p_n) < 1 holds for all n; equivalently the n-th prime gap g_n is less than 2 sqrt(p_n) + 1. 1
Proposed Year
1986 1
Progress Toward Resolution
Unproven. Imran Ghory used data on the largest prime gaps to confirm the conjecture for n up to 1.3002 x 10^16, and a more recent table of maximal gaps extends the confirmation exhaustively to 2 x 10^19, beyond 2^64. 1
Classification
Resolution Status
Open 1
Prize Status
Prize Status (category)
No Prize Offered 1
Sources
1. Andrica's Conjecture (Wikipedia)
Wikimedia Foundation
  • Lead section
    Andrica, D. (1986). Note on a conjecture in prime number theory
  • Lead section, second sentence
    The conjecture states that the inequality
  • Empirical evidence section
    Imran Ghory has used data on the largest prime gaps to confirm the conjecture for n up to
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