holds, where the discrete function is plotted above. The high-water marks for occur for , 2, and 4, with , with no larger value among
the first primes. Since the Andrica function falls asymptotically
as
increases, a prime gap of ever increasing size is needed
to make the difference large as becomes large. It therefore seems highly likely the conjecture
is true, although this has not yet been proven.
bears a strong resemblance to the prime difference
function, plotted above, the first few values of which are 1, 2, 2, 4, 2, 4,
2, 4, 6, 2, 6, ... (OEIS A001223).
A generalization of Andrica's conjecture considers the equation
and solves for .
The smallest such
is
(OEIS A038458), known as the Smarandache
constant, which occurs for and (Perez).
the 
th prime number, the inequality
is plotted above. The high-water marks for 
occur for 
, 2, and 4, with 
, with no larger value among
the first 
primes. Since the Andrica function falls asymptotically
as 
increases, a prime gap of ever increasing size is needed
to make the difference large as 
becomes large. It therefore seems highly likely the conjecture
is true, although this has not yet been proven.
bears a strong resemblance to the prime difference
function, plotted above, the first few values of which are 1, 2, 2, 4, 2, 4,
2, 4, 6, 2, 6, ... (OEIS A001223).
.
The smallest such 
is 
(OEIS A038458), known as the Smarandache
constant, which occurs for 
and 
(Perez).
