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Mathematics 21 Online
OpenStudy (anonymous):

what is the speciality of number 2519

OpenStudy (anonymous):

i give up

OpenStudy (anonymous):

according to wolfram it cannot be written as the sum of three squares

OpenStudy (anonymous):

When you divide it by 10 the remainder is 9,by 9 its 8,by 7 its 6 and so on....

OpenStudy (anonymous):

http://www.numbergossip.com/2519

OpenStudy (turingtest):

^wow, cool site!

OpenStudy (anonymous):

yeah i just google 2519 and it came up, its awesome!

OpenStudy (jlastino):

2519 is the smallest number n where either n or n+1 is divisible by the numbers from 1 to 12. From eigenschmeigen's link. What a fascinating number

OpenStudy (anonymous):

wow i never saw this before what a kick

OpenStudy (turingtest):

and Quick: what's special about 1729 ? (don't use the net!)

OpenStudy (jlastino):

Srinivasa Ramanujan!

OpenStudy (turingtest):

correct!

OpenStudy (jlastino):

"smallest number expressible as the sum of two cubes in two different ways"

OpenStudy (turingtest):

yup, good old Srini :)

OpenStudy (anonymous):

Taxi Cab Number!

OpenStudy (jlastino):

It's pretty amazing that he said that while confined in a hospital :D

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