11,111,111,111,111,111,111
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Number
$11 \, 111 \, 111 \, 111 \, 111 \, 111 \, 111$ is:
$11 \times 41 \times 101 \times 271 \times 3541 \times 9091 \times 27 \, 961$
The $20$th repunit
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