514

Number
$514$ (five hundred and fourteen) is:


 * $2 \times 257$


 * The $9$th even integer after $2, 4, 94, 96, 98, 400, 402, 404$ that cannot be expressed as the sum of $2$ prime numbers which are each one of a pair of twin primes.


 * The $15$th positive integer after $200$, $202$, $204$, $205$, $206$, $208$, $320$, $322$, $324$, $325$, $326$, $328$, $510$, $512$ that cannot be made into a prime number by changing just $1$ digit