Wednesday, October 6, 2010
215
215
= 5 x 43.
215
is a number that cannot be written as a sum of three squares.
215
is 3113 in base 4 and 555 in base 6.
215
3
= 9,938,375 = (99 + 38 + 3 + 75)
3
.
215
= 31
3
- 1.
215
is a telephone area code for the city of Philadelphia.
Source:
Numeropedia
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