216001

Appears in sequences

• Strong pseudoprimes to base 10.at n=27A020236
• Zsigmondy numbers for a = 5, b = 3: Zs(n, 5, 3) is the greatest divisor of 5^n - 3^n (A005058) that is relatively prime to 5^m - 3^m for all positive integers m < n.at n=14A109347
• Partial sums of A053872.at n=28A155974
• Semiprimes of the form k^3 + 1.at n=9A237040
• Löschian numbers (A003136) of the form k^3+1.at n=22A271185