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To write a Java program to check if a number is a twisted prime or not, you first need to create a function that checks if the number is prime. You can do this by iterating from 2 to the square root of the number and checking if the number is divisible by any of these values. Once you have verified that the number is prime, you can then check if the number remains prime after twisting its digits (reversing the number and checking if the reversed number is also prime). If both conditions are met, then the number is a twisted prime.
for s being prime find all s so that s² < 50 { 4 , 25 , 49...and one more }
121 is not a prime number because it has more factors than 1 and itself.
0,1,3,5,7,
Because it s a prime number (it can only be divided by the number one and itself) and it has an absolute value larger than the number 5 (which is also a prime number).