9999990

Appears in sequences

• Largest n-digit number with exactly n distinct prime divisors. There are no further terms.at n=6A070843
• a(n) is the largest number such that all of a(n)'s length-n substrings are distinct and divisible by 91.at n=6A093291
• a(n) is the largest number such that all of a(n)'s length-n substrings are distinct and divisible by 99.at n=6A093299
• a(n) is the least positive integer in base 10 containing n nines that is divisible by n.at n=5A112909
• a(n) = 10*(10^n-1).at n=6A124167
• a(n) = n^7 - n.at n=10A133499
• Number of 10-ary sequences with primitive period n.at n=7A218127