Post date: Aug 26, 2019 12:37:07 PM
297 is a Kaprekar number because:
2972 = 88,209 and the right hand three digits (209) plus the other digits (88) give you the original number back: 209 + 88 = 297
297 is also a Kaprekar triple because:
2973 = 26,198,073. Break the answer into three digit chunks from the right (073, 198, 26), add the chunks together, and you get the original number back: 073 + 198 + 26 = 297