499738093

Appears in sequences

• a(n) = 1111111 in base n.at n=27A053716
• a(n) = (28^n - 1)/27.at n=7A218731
• a(n) = 1 + sigma(n) + sigma(n)^2 + sigma(n)^3 + sigma(n)^4 + sigma(n)^5 + sigma(n)^6.at n=11A259251
• a(n) = ((n*p)^p - 1)/(n*p-1) where p = prime(n).at n=3A392068