Concrete Deck Overhang depth

I wish to build a one storey house
I wish to have a section of the upper floor concrete decking overhang (i.e. to protrude out) by about 1.5m or more. (And for space considerations: without using any pillars directly below the overhang)
Is this possible? If not what is the maximum depth concrete can achieve? What factors should make it so?
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