Factorization
1306 = 2 × 653
1306 has 4 divisors: 1, 2, 653, 1306
Sum of all divisors other than 1306:
656
Sums & differences
Sum of 2 squares: 1306 = 352 + 92
Goldbach conjecture: 1306 = 1303 + 3 = 1301 + 5 = 1289 + 17 = 1283 + 23 = 1277 + 29 = 1259 + 47 = 1223 + 83 = 1217 + 89 = 1193 + 113 = 1109 + 197 = . . . (only the first 10 pairs are shown)
