Q: Is 213,003 a Prime Number?
A: No, 213,003 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 213003 can be evenly divided by 1 3 7 9 21 23 27 49 63 69 147 161 189 207 343 441 483 621 1,029 1,127 1,323 1,449 3,087 3,381 4,347 7,889 9,261 10,143 23,667 30,429 71,001 and 213,003, with no remainder.
Since 213,003 cannot be divided by just 1 and 213,003, it is not a prime number.