1091 means a "1" followed by 91 "0's".
This is a huge number!
1000000000000000000000000000000000000000000000
0000000000000000000000000000000000000000000000.
So large I wrote it on two lines!
10 to the power 8 divided by 10 to the power of 6 is 10 to the power of (8 - 2) which is 10 to the power of 2 or 100
10 to the 8th power divided by 10 to the 7th power is 10
10 to the power 3+4 ie 10 to the 7th power.
10 to the fourth power.
Some prefixes, which you use with any unit, are:Tera (10 to the power 12)Giga (10 to the power 9)Mega (10 to the power 6)Kilo (10 to the power 3)Hekto (10 to the power 2)Deka (10 to the power 1)Deci (10 to the power -1)Centi (10 to the power -2)Milli (10 to the power -3)Micro (10 to the power -6)Nano (10 to the power -9)Pico (10 to the power -12)You can find a more complete list at the Wikipedia, in the article "SI prefixes".
The 91st decimal is 3.
The correct way to say it is "91st birthday." The use of "st" is the proper ordinal indicator for numbers ending in 1 (such as 1st, 21st, 31st, etc.).
Suriname is the 91st LARGEST country in the world, the 91st smallest country would be Guatemala.
91st
If counting by terms, the 91st Prime Minister of Japan is Fukudu Yasao, the 58th person to be the Prime Minister of Japan.
91st or ninety-first.
the ninety-first
91st Tournament of Roses Parade - 1980 TV was released on: USA: 1 January 1980
Ash-sharh (The consolation).
Ninety-First Street.
The Law
91st or ninety-first.