(ANSWER minimum number = 119)
Use MS Office Excel
in Column A input A1=1, A2=2 ...... to A1000=1000
In cell B1 input the following formula:
=AND((MOD(A1,2)=1),(MOD(A1,3)=2),MOD(A1,4)=3,MOD(A1,5)=4,MOD(A1,6)=5,MOD(A1,7)=0)
copy the formula to B2 ..... B1000
Find which of the results is/are TRUE
Between 1 to 1000 we find three results are true which are 119, 539 and 959