Q: Is 242,991 a Prime Number?
A: No, 242,991 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 242991 can be evenly divided by 1 3 7 9 19 21 29 49 57 63 87 133 147 171 203 261 399 441 551 609 931 1,197 1,421 1,653 1,827 2,793 3,857 4,263 4,959 8,379 11,571 12,789 26,999 34,713 80,997 and 242,991, with no remainder.
Since 242,991 cannot be divided by just 1 and 242,991, it is not a prime number.