112847

Appears in sequences

• Composite numbers whose prime factors contain no digits other than 4 and 7.at n=13A036318
• a(n) = (2*n-1)*(2*n+1)^2.at n=23A102094
• a(n) is the least odd number 2^n - m minimizing A007947(m*(2^n - m)).at n=16A143701