153521

Properties

Appears in sequences

• Iccanobif numbers: add a(n-1) to reversal of a(n-2).at n=22A014260
• Primes p such that p+2, p^2 - 2p + 2, and p^2 - 2p + 4 are all prime.at n=29A101315
• On a spirally numbered square grid, with labels starting at 1, this is the number of the last cell that a (1,n) leaper reaches before getting trapped, or -1 if it never gets trapped.at n=19A323471
• Lesser of twin self primes, i.e., smaller member of the pair of self primes differing by 2.at n=15A380713
• Prime numbersat n=14153