408807

Appears in sequences

• Difference between the smallest 10^n-digit member of a prime 5-tuple and 10^(10^n - 1).at n=1A275685
• 10^n + a(n) is the least (n+1)-digit prime member of a prime 5-tuple, or a(n) = 0 if no such number exists.at n=9A343635