Q: Is 265,408 a Prime Number?
A: No, 265,408 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 265408 can be evenly divided by 1 2 4 8 11 13 16 22 26 29 32 44 52 58 64 88 104 116 143 176 208 232 286 319 352 377 416 464 572 638 704 754 832 928 1,144 1,276 1,508 1,856 2,288 2,552 3,016 4,147 4,576 5,104 6,032 8,294 9,152 10,208 12,064 16,588 20,416 24,128 33,176 66,352 132,704 and 265,408, with no remainder.
Since 265,408 cannot be divided by just 1 and 265,408, it is not a prime number.