Q: Is 1,257,980 a Prime Number?
A: No, 1,257,980 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 1257980 can be evenly divided by 1 2 4 5 10 20 31 62 124 155 310 620 2,029 4,058 8,116 10,145 20,290 40,580 62,899 125,798 251,596 314,495 628,990 and 1,257,980, with no remainder.
Since 1,257,980 cannot be divided by just 1 and 1,257,980, it is not a prime number.