Q: Is 42,000,400 a Prime Number?
A: No, 42,000,400 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 42000400 can be evenly divided by 1 2 4 5 8 10 13 16 20 25 26 40 41 50 52 65 80 82 100 104 130 164 197 200 205 208 260 325 328 394 400 410 520 533 650 656 788 820 985 1,025 1,040 1,066 1,300 1,576 1,640 1,970 2,050 2,132 2,561 2,600 2,665 3,152 3,280 3,940 4,100 4,264 4,925 5,122 5,200 5,330 7,880 8,077 8,200 8,528 9,850 10,244 10,660 12,805 13,325 15,760 16,154 16,400 19,700 20,488 21,320 25,610 26,650 32,308 39,400 40,385 40,976 42,640 51,220 53,300 64,025 64,616 78,800 80,770 102,440 105,001 106,600 128,050 129,232 161,540 201,925 204,880 210,002 213,200 256,100 323,080 403,850 420,004 512,200 525,005 646,160 807,700 840,008 1,024,400 1,050,010 1,615,400 1,680,016 2,100,020 2,625,025 3,230,800 4,200,040 5,250,050 8,400,080 10,500,100 21,000,200 and 42,000,400, with no remainder.
Since 42,000,400 cannot be divided by just 1 and 42,000,400, it is not a prime number.
| Number | 42,000,398 | 42,000,399 | 42,000,401 | 42,000,402 |
| Prime? | no | no | no | no |