11 (number) - Wikipedia
https://en.wikipedia.org:443/wiki/11_(number)
WEBEleven is the fifth prime number, and the first two-digit numeric palindrome in decimal. It forms a twin prime with 13, [6] and it is the first member of the second prime quadruplet (11, 13, 17, 19). [7] 11 is a sexy prime with 5 and 17. 11 is the first prime exponent that does not yield a Mersenne prime, where , which is composite.
DA: 93 PA: 83 MOZ Rank: 41