777777777777
domain: N
Appears in sequences
- a(n) = 7*(10^n - 1)/9.at n=12A002281
- Smallest number using a single digit with multiplicity such that every partial concatenation is prime.at n=17A089335
- a(1) = 11 then the least number of concatenation of n that gives prime when placed on the most significant side of the previous concatenation.at n=6A110767
- a(n) is the least positive integer in base 10 containing n sevens that is divisible by n.at n=10A112904
- Repdigit numbers that are divisible by 7.at n=26A366596
- Repdigit self-numbers that are not in A337208.at n=11A382167