583333246
This number is a composite.
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The smallest triangular number that is sphenic as well as its reversal, i.e., 583333246 = 2*8539*34157 and 642333385 = 5*3331*38567. [Sariyar]
Submitted: 2021-10-05 22:58:17; Last Modified: 2021-10-05 23:05:30.
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