I agree, the "=" (equal) and "~" (approximately) are the wrong around, it should read:

    2^10 ~ Kilo = 10^3
    2^20 ~ Mega = 10^6
    2^30 ~ Giga = 10^9
    2^40 ~ Tera = 10^12

Or, to use the Ki, Mi, etc.

    2^10 = Kibi ~ Kilo = 10^3
    2^20 = Mebi ~ Mega = 10^6
    2^30 = Gibi ~ Giga = 10^9
    2^40 = Tebi ~ Tera = 10^12