16, 81, 256, 625 all have five factors.
One possible conjecture is that each square number up to 1000 has 4 factors. The conjecture is manifestly false, but it is still a conjecture.
You end up with a number that is 1000 times as large.
1012
The number consists of nines, so the number will round up to 100000 as the result.
Rounding up implies the number is smaller than 1000. However, a number smaller than 1000 cannot be a 4-digit number. So there cannot be such a number. What was said is wrong. The greatest 4 digit number that rounds up is 999.9
if you have a number with a five as the last digit you round up.
270 and 1000
Of the numbers up to 50, 48 has the most factors.
Look at the number in the hundreds position. It is a 5, so the number will be rounded up. So 2000 will be the answer.
500
105 is a composite number because it has factors other than 1 and itself. It is not a prime number. The prime factorization of 105 is 3 x 5 x 7.
I believe you are thinking of a prime number. Ex. The factors of 2 are 1 and 2. The factors of 13 are 1 and 13.