Q: Is 21,421,000 a Prime Number?
A: No, 21,421,000 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 21421000 can be evenly divided by 1 2 4 5 8 10 20 25 31 40 50 62 100 124 125 155 200 248 250 310 500 620 691 775 1,000 1,240 1,382 1,550 2,764 3,100 3,455 3,875 5,528 6,200 6,910 7,750 13,820 15,500 17,275 21,421 27,640 31,000 34,550 42,842 69,100 85,684 86,375 107,105 138,200 171,368 172,750 214,210 345,500 428,420 535,525 691,000 856,840 1,071,050 2,142,100 2,677,625 4,284,200 5,355,250 10,710,500 and 21,421,000, with no remainder.
Since 21,421,000 cannot be divided by just 1 and 21,421,000, it is not a prime number.
| Number | 21,420,998 | 21,420,999 | 21,421,001 | 21,421,002 |
| Prime? | no | no | no | no |