147,573,952,589,676,412,927

Number
$147 \, 573 \, 952 \, 589 \, 676 \, 412 \, 927$ is:


 * $193 \, 707 \, 721 \times 761 \, 838 \, 257 \, 287$


 * The $67$th Mersenne number:
 * $147 \, 573 \, 952 \, 589 \, 676 \, 412 \, 927 = 2^{67} - 1$


 * Mistakenly reported as prime in $1644$ by.


 * Proven composite by in $1903$.

Also see

 * Factors of Mersenne Number M67