1701 in 1337 speak is "itoi" or Itoi, the surname of Shigesato Itoi.
Born November 10, 1948 he is a famous Japanese copywriter and essayist, though he is best known in the West as a game designer for his work on Nintendo's Mother series of games, specifically EarthBound in the United States, as well as his bass fishing video game.
This is a fishing game developed and released only in Japan for the Super Famicom on February 21, 1997 and updated for the Nintendo 64 on March 31, 2000 as the Definitive Edition.
The bass fishing video game is possibly the worst ever video game produced (seriously, who wants to play fishing!?), hence why the number 1701 is special; because it was the surname of the producer in 1337 who produced the worst game ever.