Q: Is 1,261,280 a Prime Number?
A: No, 1,261,280 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 1261280 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 80 160 7,883 15,766 31,532 39,415 63,064 78,830 126,128 157,660 252,256 315,320 630,640 and 1,261,280, with no remainder.
Since 1,261,280 cannot be divided by just 1 and 1,261,280, it is not a prime number.