300 (number) and strictly non-palindromic number. 361 = 19, centered triangular number, centered octagonal number, centered decagonal number, member of the Mian–Chowla sequence; also the number of positions on a standard 19 x 19 Go board. The Bahá'í calendar is based on 19 months of 19 days each. 362 = 2 × 181, Mertens function returns 0, nontotient, noncototient. 363 = 3 × 11, sum of nine consecutive primes (23 + 29 + 31 + 37 + 41 + 43 + 47 + 53 + 59), Mertens function returns 0, perfect totient number. 364 = 2 × 7 × 13, tetrahedral number,
Nine-dart finish 501 total, in the following way: This eliminates the chance of any dart being deflected by an already thrown dart into the wrong scoring area by throwing each dart at a different location on the board. It is only usually seen in exhibition matches, as in tournaments, players are inclined to aim for the triple 20, only switching to the triple 19 for a cover shot. Arguably the most difficult nine dart finish would be 180 (3xT20), 171 (3xT19), and 150 (3xBULL) – owing to the difficulty of getting all three darts in the bullseye: it is the smallest double