8 digit palindrome = 9*10*10*10 = 9000
but how to get 8 digit prime palindromes ?
Even no of digits cannot be prime number so no pallindromes
check this link https://math.stackexchange.com/questions/2255780/how-many-8-digit-palindromes-are-prime/2255829#2255829?newreg=b6c8ce28f3fc4ae68100499c4852f5a5
Let the digits of our 8-digit palindrome n be d1d2d3d4d4d3d2d1. Then the palindrome has the form
Such n cannot be prime because gcd(10000001,1000010,100100,11000)=11.
So there are NO 8-digit prime palindromes. (However, there are prime palindromes with an odd number of digits, e.g. 101101, 1030110301, 9868998689, 98010899801089.)
In the above question, we have to find number of 8 digit prime palindromes but your answer includes both prime and non-prime palindromes.
For ex- 20000002
Is it a prime palindrome. ??