145 is an odd composite number composed of two prime numbers multiplied together.
145 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 145:
5 × 29
See below for interesting mathematical facts about the number 145 from the Numbermatics database.
Names of 145
- Cardinal: 145 can be written as One hundred forty-five.
- Scientific notation: 1.45 × 102
Factors of 145
Divisors of 145
Bases of 145
- Binary: 100100012
- Hexadecimal: 0x91
- Base-36: 41
Squares and roots of 145
Scales and comparisonsHow big is 145?
- 145 seconds is equal to 2 minutes, 25 seconds.
To count from 1 to 145 would take you about twelve 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 randomly-chosen 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 145 cubic inches would be around 0.4 feet tall.
Recreational maths with 145
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"Number 145 - Facts about the integer". Numbermatics.com. 2023. Web. 6 June 2023.
Numbermatics. (2023). Number 145 - Facts about the integer. Retrieved 6 June 2023, from https://numbermatics.com/n/145/
Numbermatics. 2023. "Number 145 - Facts about the integer". https://numbermatics.com/n/145/
The information we have on file for 145 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!
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