Question

What is largest prime factor of 309 squared minus
147squared

Answer 1

309^2 - 147^2 is the same as 95,481 - 21,609.

95,481 - 21,609 = 73,872.

Prime Factors of 73,872 =2, 2, 2, 2, 3, 3, 3, 3, 3, 19

Which is the same as = 24 x 35 x 19