Q: Is 161,220 a Prime Number?
A: No, 161,220 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 161220 can be evenly divided by 1 2 3 4 5 6 10 12 15 20 30 60 2,687 5,374 8,061 10,748 13,435 16,122 26,870 32,244 40,305 53,740 80,610 and 161,220, with no remainder.
Since 161,220 cannot be divided by just 1 and 161,220, it is not a prime number.