Q: Is 355,000 a Prime Number?
A: No, 355,000 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 355000 can be evenly divided by 1 2 4 5 8 10 20 25 40 50 71 100 125 142 200 250 284 355 500 568 625 710 1,000 1,250 1,420 1,775 2,500 2,840 3,550 5,000 7,100 8,875 14,200 17,750 35,500 44,375 71,000 88,750 177,500 and 355,000, with no remainder.
Since 355,000 cannot be divided by just 1 and 355,000, it is not a prime number.