First determine the prime factors. then write in exponent form (power form or index form) thus your answer would be 2^2 x 13^2.
Prime Factors of 676: 1, 2, 13 676 = 2 * 2 * 13 * 13 = 22 * 132
676 = 2 x 2 x 13 x 13 or 22 x 132
Number 676 Factorization: 2*2*13*13
Since it wold take up a lot of space, not to mention enormous time, to write all of the primes of every number between 1 and 676. I have place a link to a prime factorization tool that will factor all of those numbers. In addition, there is a link that has it all done for you. A table with all the prime factors of the numbers you requested.
1.8.7
Its prime factors are 2 and 13
13
2 x 2 x 13 x 13
2 x 2 x 13 x 13
It is so very simple and quick to get the answer if you use the calculator that comes with your computer. But clearly you are not capable of using it so the answer is 456976.
Prime factors are: 2, 2, 13, 13 Others can be any combination of the primes, i.e. 2 x 2 = 4 2 x 13 = 26 2 x 2 x 13 = 52 13 x 13 = 169 2 x 13 x 13 = 338
676 can be written 676 ----- 1