3299
This number is a prime.
3299 is the (3*2*9*9 - (3+2+9+9))th prime. Note that 3299 is the smallest such prime. [Firoozbakht]
3300±1 are the only 4-digit twin primes of the form AABB,
CCDD, where BB is a multiple of CC and AA is a multiple of
DD (01|32 and 33|99). [Leonardis]
The number of primes ending with the digit 3 and primes ending with the digit 9 are tied for the first time at 3299. [Gaydos]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Reginald McLean