Q: Is 991,248 a Prime Number?
A: No, 991,248 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 991248 can be evenly divided by 1 2 3 4 6 8 12 16 24 48 107 193 214 321 386 428 579 642 772 856 1,158 1,284 1,544 1,712 2,316 2,568 3,088 4,632 5,136 9,264 20,651 41,302 61,953 82,604 123,906 165,208 247,812 330,416 495,624 and 991,248, with no remainder.
Since 991,248 cannot be divided by just 1 and 991,248, it is not a prime number.