111821

Properties

Appears in sequences

• Initial term in sequence of four consecutive primes separated by 3 consecutive differences each <=6 (i.e., when d = 2, 4 or 6) and forming d-pattern=[6,2,4]; short d-string notation of pattern = [624].at n=27A078853
• Emirps that become their own reversals when rotated through 180 degrees (including on calculator display).at n=22A209620
• Emirps whose binary conversion remains emirp when read in decimal.at n=28A226972
• Prime numbersat n=10603