large numbers

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123456
Across
  1. 3. same value as twenty lakh in international place value system.
  2. 6. successor of largest six digit number.
Down
  1. 1. the fourth period in International place value system.
  2. 2. place value of 3 in 2435721.
  3. 4. the third period in Indian place value system.
  4. 5. smallest five digit number.