Q: Is 2,520,021 a Prime Number?
A: No, 2,520,021 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 2520021 can be evenly divided by 1 3 7 21 31 49 79 93 147 217 237 343 553 651 1,029 1,519 1,659 2,449 3,871 4,557 7,347 10,633 11,613 17,143 27,097 31,899 51,429 81,291 120,001 360,003 840,007 and 2,520,021, with no remainder.
Since 2,520,021 cannot be divided by just 1 and 2,520,021, it is not a prime number.