111151111

Appears in sequences

• Palindromes for which the product of the digits is prime.at n=18A117058
• Composite numbers for which both sum and product of digits are primes.at n=31A225864
• a(n) = (10^(2*n+1) - 1)/9 + 4*10^n.at n=4A332115
• Smallest number with exactly n 1's in its digits both in decimal and binary representation.at n=7A350691