one thousand

kilo (k)

M

1111101000_2

2^3×5^3

m | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 1000 mod m | 0 | 1 | 0 | 0 | 4 | 6 | 0 | 1

1000 = 10^3 is a perfect cube.

1000 has 2 representations as a sum of 2 squares: 1000 = 10^2 + 30^2 = 18^2 + 26^2

1000 is an even number.

1000 has the representation 1000 = 2^10 - 24.

1000 divides 57^4 - 1.