No. 121 isn't prime.
121 is 11x11 and 11 is a prime number. So the factors are 1, 11, and 121.We write the prime factorization as 121=112 .
121 = 112
112 = 121
121 11,11
121 = 11 × 11
112 = 121
121 = 112
112 = 121
It is: 11*11 = 121 or as 112 = 121
121 = 11 * 11 = 112
11 x 11 = 121