139831

Properties

Appears in sequences

• Primes in A005891 = Centered pentagonal numbers: (5n^2 + 5n + 2)/2.at n=38A145838
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, -1, 1), (0, 0, 1), (0, 1, -1), (1, 0, -1)}.at n=12A148502
• Beginning with 13, least prime such that concatenation of first n terms and its digit reversal both are primes.at n=45A382898
• Prime numbersat n=12994