1000999

Properties

Appears in sequences

• Primes of the form 10^n + 10^(n-3) - 1.at n=1A096211
• Numbers k such that the k-th triangular number contains only digits {0,5,9}.at n=12A119086
• Primes obtained by concatenating decremented numbers starting at a power of 10.at n=3A227949
• Primes of the form m = 10^i + 10^j - 1, where i > j >= 0.at n=6A239720
• Primes of the form 10^i + 10^j - 1.at n=10A306855
• a(n) is the n-digit number k such that R(k)/k is maximal for any n-digit number.at n=6A372010
• Prime numbersat n=78573