Section: |
A. Introduction
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Dr Colin Rose
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120 = ( (1 + 2)! - 0! )! , (-1 + (2 + 0!)!)!
127 = -1 + 27 (prime)
143 = -1 + 4! 3!
144 = (1 + 4)! + 4! ,
145 = 1 + 4! + 5!
216 =
240 = 2 (4 + 0!)! ,
343 = (3 + 4)3 ,
354 = 3 (5! -
355 = (3 × 5!) - 5
360 = 3 (6 - 0!)! , 3! × 60
384 =
456 = 4 (5! - 6)
595 = -5! +
660 = 6! - 60
693 = 6! - (9 × 3) , 6! -
713 = -71 + 3!! ...
715 = (7-1)! - 5
719 =
720 =
721 =
722 =
723 =
724 =
725 =
726 =
727 =
728 =
729 =
733 = 7 + 3! + 3!! (prime)
736 = 7 + 36
744 = (7 + 4!) 4! , (7 - 4)!! + 4! ,
799 = 79 +
936 = (
GREEN numbers: require concatenation of digits RED numbers: factorials are not needed |