Seventy three is an emirp, because the reverse of 73 is 37. 73 and 37 are prime numbers. 73 is 21st prime number while 37 is the 12th prime number. The square root of 73 is 8.544
Seventy three is an emirp, because the reverse of 73 is 37. 73 and 37 are prime numbers. 73 is 21st prime number while 37 is the 12th prime number. The square root of 73 is 8.544
The nearest previous perfect square is 64 and the nearest next perfect square is 81 .