1157

This number is a composite.

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(1157, 1159) is the first pair of 4-digit brilliant numbers, i.e., (1157 = 13 × 89, 1159 = 19 × 61), differing by 2, Shall we call them a pair of "twin brilliant numbers?" [Loungrides]

Submitted: 2018-07-04 04:05:21; Last Modified: 2020-05-31 16:56:17.