Q: Is 3,121,740 a Prime Number?
A: No, 3,121,740 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 3121740 can be evenly divided by 1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 41 45 47 54 60 81 82 90 94 108 123 135 141 162 164 180 188 205 235 246 270 282 324 369 405 410 423 470 492 540 564 615 705 738 810 820 846 940 1,107 1,230 1,269 1,410 1,476 1,620 1,692 1,845 1,927 2,115 2,214 2,460 2,538 2,820 3,321 3,690 3,807 3,854 4,230 4,428 5,076 5,535 5,781 6,345 6,642 7,380 7,614 7,708 8,460 9,635 11,070 11,562 12,690 13,284 15,228 16,605 17,343 19,035 19,270 22,140 23,124 25,380 28,905 33,210 34,686 38,070 38,540 52,029 57,810 66,420 69,372 76,140 86,715 104,058 115,620 156,087 173,430 208,116 260,145 312,174 346,860 520,290 624,348 780,435 1,040,580 1,560,870 and 3,121,740, with no remainder.
Since 3,121,740 cannot be divided by just 1 and 3,121,740, it is not a prime number.