231 + 231 = 2 x 231 = 232
Approximately 231
3/13 as decimal is .231
13 is the greatest prime that needs to be checked to determine if 231 is a prime.
13 plus 13 is equal to 26
234 + 231 = 465
231 + 194 = 425
231 + 231 = 2 x 231 = 232
Perez Morton was born on 1751-11-13.
Approximately 231
13+13+13+13+13+13+13+13+13+13 = 13 * 10 = 130.
91
3/13 as decimal is .231
13 is the greatest prime that needs to be checked to determine if 231 is a prime.
231 / \ 3 77 / \ 7 11 / \ 11 1
1, 5, 7, 25, 35, 1751, 5, 13, 25, 65, 325
13 plus 13 is equal to 26