Q: Is 72,009 a Prime Number?
A: No, 72,009 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 72009 can be evenly divided by 1 3 7 9 21 27 63 81 127 189 381 567 889 1,143 2,667 3,429 8,001 10,287 24,003 and 72,009, with no remainder.
Since 72,009 cannot be divided by just 1 and 72,009, it is not a prime number.