161
161 is an odd composite number composed of two prime numbers multiplied together.
161 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.
Prime factorization of 161:
7^{} × 23^{}
See below for interesting mathematical facts about the number 161 from the Numbermatics database.
Names of 161
 Cardinal: 161 can be written as One hundred sixtyone.
Scientific notation
 Scientific notation: 1.61 × 10^{2}
Factors of 161
Divisors of 161
Bases of 161
 Binary: 10100001_{2}
 Hexadecimal: 0xA1
 Base36: 4H
Squares and roots of 161
Scales and comparisons
How big is 161? 161 seconds is equal to 2 minutes, 41 seconds.

To count from 1 to 161 would take you about twenty seconds.
This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomlychosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
 A cube with a volume of 161 cubic inches would be around 0.5 feet tall.
Recreational maths with 161
Link to this page
HTML: To link to this page, just copy and paste the link below into your blog, web page or email.
BBCODE: To link to this page in a forum post or comment box, just copy and paste the link code below:
Cite this page
MLA style:
"Number 161  Facts about the integer". Numbermatics.com. 2021. Web. 18 September 2021.
APA style:
Numbermatics. (2021). Number 161  Facts about the integer. Retrieved 18 September 2021, from https://numbermatics.com/n/161/
Chicago style:
Numbermatics. 2021. "Number 161  Facts about the integer". https://numbermatics.com/n/161/
The information we have on file for 161 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
Keywords: Divisors of 161, math, Factors of 161, curriculum, school, college, exams, university, Prime factorization of 161, STEM, science, technology, engineering, physics, economics, calculator, one hundred sixtyone.