318
In the sequence 8, 13, 18, 23, the difference between consecutive numbers is 5. To find the 63rd term of this sequence, we can simply add 5 to the previous term (the 62nd term) until we reach the 63rd term. This means that the 63rd term will be 5 more than the 62nd term, which is 5 more than the 61st term, and so on. Since the first term of the sequence is 8, the 62nd term will be 8 + 5 * 62 = 318. Therefore, the 63rd term is also 318.