347

This number is a prime.

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

The only non-titanic-prime (emirp) of form 7^p+(p+1) for p a prime, (p=3). [Loungrides]

(347, 743) is the first pair of emirps (p, q) such that 5^p and 5^q are both "apocalyptic numbers", i.e., numbers that contain the beast number. [Loungrides]

The only emirp that can be represented as the number of lines in a Rhapsody of Homer’s Odyssey, (i.e. Rhapsody VΙI). This line says: «πὰρ δὲ γυνὴ δέσποινα λέχος πόρσυνε καὶ εὐνήν». [Loungrides]

(347, 349, 353, 359, 367) is the first case of five successive primes whose the differences of successive primes in order are: 2, 4, 6, 8. [Loungrides]