1309
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Number
$1309$ (one thousand, three hundred and nine) is:
- $7 \times 11 \times 17$
- The $1$st term of the $1$st triplet of consecutive positive integers all of which are sphenic:
- $1309 = 7 \times 11 \times 17$, $1310 = 2 \times 5 \times 131$, $1311 = 3 \times 19 \times 23$
Also see
Sources
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $1309$