I need to fine the private key + decrypt the cipher text using both of given cipher text and modulus N and public exponent.

Regards.

Attacks on RSA One of the most common attacks on RSA is prime factorization attack. Example: The following cipher text is encrypted using a week RSA key whose modulus and public exponent are given below. Crack the private key and decrypt the cipher text. Cipher Text: 90505 123045 132495707756 134797 # 83941 98508568624334473 1 1 1 7726 # 77041600692822724019390698270 # 843 779201 80551 73681 0404465769 # 23298631 191590239622004976020 # 76044851276011511729119265079 Modulus N = 1060981 17893828030018249920531 Public Exponent e = 2^ 16+1