170, 141,183, 460,469, 231,731, 687,303, 715,884, 105,727

Number
$170 \, 141 \, 183 \, 460 \, 469 \, 231 \, 731 \, 687 \, 303 \, 715 \, 884 \, 105 \, 727$ is:


 * A prime number


 * The $31$st Mersenne number:
 * $170 \, 141 \, 183 \, 460 \, 469 \, 231 \, 731 \, 687 \, 303 \, 715 \, 884 \, 105 \, 727 = 2^{127} - 1$


 * The $12$th Mersenne prime:
 * $170 \, 141 \, 183 \, 460 \, 469 \, 231 \, 731 \, 687 \, 303 \, 715 \, 884 \, 105 \, 727 = 2^{127} - 1$