Q: Is 155,440 a Prime Number?
A: No, 155,440 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 155440 can be evenly divided by 1 2 4 5 8 10 16 20 29 40 58 67 80 116 134 145 232 268 290 335 464 536 580 670 1,072 1,160 1,340 1,943 2,320 2,680 3,886 5,360 7,772 9,715 15,544 19,430 31,088 38,860 77,720 and 155,440, with no remainder.
Since 155,440 cannot be divided by just 1 and 155,440, it is not a prime number.