17

This number is a prime.

Just showing those entries submitted by 'Merickel': (Click here to show all)

The number of primes of Smarandache-Wellin type descending by increments from a power of ten that are smaller than the smallest one ascending by increments from a power of ten. [Merickel]

The number of different ways its emirp partner 71 converts into a prime from a base less than ten to a base greater than it up to and including ten (likely maximum regardless of whether the original is prime). [Merickel]

Chess Grandmaster and friend of Bobby Fischer, Robert Byrne, accurately predicted that World Champion Boris Spassky would get 17 half points in his match with Fischer. [Merickel]