numeric field overflow

[stanom]

In original input.dbf table exists value "8401000000".
After pgdbf converting process was this value changed to value "8.401E+10" (in output.sql file).

The structure of attribute field "ico" was converted (by pgdbf):
from
input.dbf: Name=ICO, Type=N, Len=10, Decimal=0
to
output.sql: ico NUMERIC(10)