1147 - 500 = 647
500 minus 279 is 221.
500 minus 315 equals 185.
Half of 7000 is 3500 minus 500=3000.
The positive integer factors of 1147 are:1, 31, 37. 1147
500 - 441 = 59
500 - 343 = 157
500 - 199 = 301
500 - 212 = 288
500 - 399 = 101
8000-500=7500.
500 - 240 = 260
1147 is composite.