1,398,269/Historical Note

Historical Note on $1 \, 398 \, 269$
The Mersenne number $M_{1 \, 398 \, 269} = 2^{1 \, 398 \, 269} - 1$ was demonstrated to be a Mersenne prime by, as part of the GIMPS team headed by.

This discovery was announced on $13$ November $1996$.