The numbers are: (19+square root of 131) and (19-square root of 131)
To find the digital root of a number, repeatedly add its digits (called "digit sum") until you're left with a 1-digit number, 1 thru 9; e.g., 19 (a prime number) = 1+9 = 10 = 1+0 = 1, i.e., the digital root of 19 is 1 [sometimes expressed as 19=dr(1)]. Here's one more example, 89 (a prime) = 8+9 = 17 = 1+7 = dr(8).
The prime numbers between 15 and 20 are 17 and 19. 17*19 = 323
It is 15
15
The numbers are: (19+square root of 131) and (19-square root of 131)
They are 15, 16, 17, 18 & 19.
To find the digital root of a number, repeatedly add its digits (called "digit sum") until you're left with a 1-digit number, 1 thru 9; e.g., 19 (a prime number) = 1+9 = 10 = 1+0 = 1, i.e., the digital root of 19 is 1 [sometimes expressed as 19=dr(1)]. Here's one more example, 89 (a prime) = 8+9 = 17 = 1+7 = dr(8).
The prime numbers between 15 and 25 are- 17, 19 and 23.They are: 17, 19 and 23They are: 17 19 and 23
The prime numbers between 15 and 20 are 17 and 19. 17*19 = 323
They are: 18 and 19
The prime numbers between 15 and 30 are: 17 19 23 29.
It is 15
15
No. 19 is a prime number, and all prime numbers have irrational roots.
19. It is prime.
4x4=16, and 5x5=25, so 4 and 5 are the whole numbers closest to the square root of 19. [And incidentally of all the square roots of all the whole numbers between 16 and 25.]