x=-3 or x=5
A beprisque number nnn is an integer which is either one more than a prime number and one less than a perfect square, or one more than a square and one less than a prime. The 5th such number is 10.
26 5*5 and 3*3*3
-4.52494 or 5.52494 (to 5 dp)
A cube
x=-3 or x=5
A beprisque number nnn is an integer which is either one more than a prime number and one less than a perfect square, or one more than a square and one less than a prime. The 5th such number is 10.
26 5*5 and 3*3*3
-4.52494 or 5.52494 (to 5 dp)
I am 49.
37
A cube
3cubed is 27, 5 squared is 25. Answer is 26
No
A prime number that is one more than a square number is known as a Sophie Germain prime. Sophie Germain primes are of the form 2p+1, where p is a prime number. For example, 17 is a Sophie Germain prime because it is one more than the square of 4, and both 4 and 17 are prime numbers. Sophie Germain primes have applications in number theory and cryptography.
5 more than looks like this: 5-#
Let's call "a number" x. Then 5 more than twice x is 5 + 2x.