PostgreSQL/Math Functions/exponent

Select 4e3 AS exponential_float

postgres=# Select 4e3 AS exponential_float;
 exponential_float
-------------------
              4000
(1 row)
postgres=#

Select 6.1e-2 AS negative_exponent

postgres=# select 6.1e-2 AS negative_exponent;
 negative_exponent
-------------------
             0.061
(1 row)
postgres=#