Q: Is 671,550 a Prime Number?
A: No, 671,550 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 671550 can be evenly divided by 1 2 3 5 6 10 11 15 22 25 30 33 37 50 55 66 74 75 110 111 121 150 165 185 222 242 275 330 363 370 407 550 555 605 726 814 825 925 1,110 1,210 1,221 1,650 1,815 1,850 2,035 2,442 2,775 3,025 3,630 4,070 4,477 5,550 6,050 6,105 8,954 9,075 10,175 12,210 13,431 18,150 20,350 22,385 26,862 30,525 44,770 61,050 67,155 111,925 134,310 223,850 335,775 and 671,550, with no remainder.
Since 671,550 cannot be divided by just 1 and 671,550, it is not a prime number.