162, 259,276, 829,213, 363,391, 578,010, 288,127/Historical Note

Historical Note on $162 \, 259 \, 276 \, 829 \, 213 \, 363 \, 391 \, 578 \, 010 \, 288 \, 127$
announced in $1914$ that he had discovered that $162 \, 259 \, 276 \, 829 \, 213 \, 363 \, 391 \, 578 \, 010 \, 288 \, 127 = 2^{107} - 1$ is prime.

simultaneously made the same announcement at the same time.

As some of 's claims of the primality of other Mersenne numbers proved to be incorrect, this result is usually attributed to rather than to.

It was the $12$th Mersenne prime to be discovered, although the $11$th in sequence.

had demonstrated in $1876$ that $2^{127} - 1$ (actually the $12$th in sequence) is prime.