277777

Appears in sequences

• Smallest semiprime containing exactly n 7's.at n=4A104760
• Near-repdigit semiprimes with 7 as repeated digit.at n=34A105988
• Smallest semiprime ending in exactly n 7's.at n=4A106662
• a(n) = numerator of (1/n^3)*(-1/(n+1) + 16/(n+2) + 3/(4*(2*n+1)) - 81/(4*(2*n+3))), term of a BBP-type series representation of zeta(3) by V. Adamchik and S. Wagon.at n=22A256323
• a(n) is the least integer k such that k/Fibonacci(n) > sqrt(2).at n=27A293419
• a(n) is the integer k that minimizes |k/Fibonacci(n) - sqrt(2)|.at n=27A293420
• Numbers k with digits in nondecreasing order and each digit > 1 such that the iterated product of digits of k is a prime and k is the least positive integer with this property and its product of digits.at n=28A333960