Q: Is 161,408 a Prime Number?
A: No, 161,408 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 161408 can be evenly divided by 1 2 4 8 13 16 26 32 52 64 97 104 128 194 208 388 416 776 832 1,261 1,552 1,664 2,522 3,104 5,044 6,208 10,088 12,416 20,176 40,352 80,704 and 161,408, with no remainder.
Since 161,408 cannot be divided by just 1 and 161,408, it is not a prime number.