171819

Appears in sequences

• Decimal concatenation of n, n+1, and n+2.at n=17A001703
• Concatenate prevprime(n), n, and nextprime(n).at n=15A049857
• Concatenate the consecutive increasing numbers starting with prime(n) and ending with prime(n+1).at n=6A111875
• Duplicate of A001703.at n=17A127422
• Twin prime pairs concatenated to their average in decimal representation (with the lesser twin prepended and the greater twin appended).at n=3A268145
• Starts of runs of 3 consecutive integers that are Stolarsky-Niven numbers (A364123).at n=21A364125