172217
domain: N
Properties
Primality
- Prime
- yes
Appears in sequences
- Number of nXnXn triangular 0..2 arrays with each element equal to the sum mod 3 of two neighbors.at n=4A193156
- Primes of the form XYYX, where Y is a single digit.at n=2A214290
- Smallest prime of the form "Concatenate(m,n,m)".at n=22A252942
- Primes such that the decimal digits in the first half of the number are a nontrivial permutation of the digits in the second half.at n=26A297994
- Prime numbersat n=15685