Q: Is 161,385 a Prime Number?
A: No, 161,385 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 161385 can be evenly divided by 1 3 5 7 15 21 29 35 53 87 105 145 159 203 265 371 435 609 795 1,015 1,113 1,537 1,855 3,045 4,611 5,565 7,685 10,759 23,055 32,277 53,795 and 161,385, with no remainder.
Since 161,385 cannot be divided by just 1 and 161,385, it is not a prime number.