Is 2421843 a prime?

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i have a false feeling i can tell a number has two prime divisors, one small, one huge. i checked 1983, 6976, and 9687372. hope it gets disproven. i would like something more meaningful than r u ok?

2007-09-24 16:17:23 · 3 answers · asked by atrichtch 2 in Science & Mathematics ➔ Mathematics

demiurge get a best answer.

2007-09-24 16:22:43 · update #1

3 answers

It is divisbible by 3. It isn't a prime number

2007-09-24 16:20:43 · answer #1 · answered by Demiurge42 7 · 0⤊ 0⤋

Add all the digits together. 2+4+2+1+8+4+3=24 which is divisible by three. So the whole number is divisible by three. It is not a prime number.

2007-09-24 23:28:09 · answer #2 · answered by aidenshunter 3 · 0⤊ 0⤋

it is not a prime number because it can be divided by three

2007-09-24 23:28:20 · answer #3 · answered by chocolatelvr 4 · 0⤊ 0⤋