4. 140=2*2*5*7
5. 5592, 5292, 5892
5394, 5694, 5994
5196, 5496, 5796
5298, 5598, 5898
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4. 140=2*2*5*7
5. 5592, 5292, 5892
5394, 5694, 5994
5196, 5496, 5796
5298, 5598, 5898