200 = 23 x 52.
200 has two representations as a sum of two squares: 200 = 22 + 142 = 102 + 102.
200 is a divisor of 492 - 1.
200 is the smallest unprimeable number. It cannot be turned into a prime number by changing just one of its digits to any other digit.
200 is 404 in base 7 and 242 in base 9.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiTOh-RcJBOq6-AQg0B3RyOcWglk4jfPpPHwab84-4hJQV-qFrCqLe9Q7qQ097zDAh5JyrNziVg3QeMJjh17MISPEHoRvCf7MRN1AuAX9kkf_avglExqUFQ42JpVqMWeVX7DZNOIpzk5qE/s200/n0200.jpg)
Source: Number Gossip
No comments:
Post a Comment