3 x 13
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How about: 39*29 = 1131
These factor pairs, when multiplied, equal 273: (1, 273) (3, 91) (7, 39) (13, 21)
13 * 39 = 507
Each of these factor pairs (multiply the numbers in parentheses) equals 273: (1, 273) (3, 91) (7, 39) (13, 21)
These factor pairs, when multiplied together, equal 156: (1, 156) (2, 78) (3, 52) (4, 39) (6, 26) (12, 13)