No, 473 is not prime since it is divisible by 1, 11, 43, and 473. Prime numbers are only divisible by 1 and itself.
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..5 | 16555 ..7 | 3311 11 | 473 43 | 43 .....| 1 16555 = 5 x 7 x 11 x 43
Expressed as a proper fraction in its simplest form, 0.473 is equal to 473/1000 or four hundred and seventy-three thousandths.
When rounding 473 to the nearest ten, you look at the digit in the tens place, which is 7. Since 7 is greater than 5, you round up. Therefore, 473 rounded to the nearest ten is 480.
470
1, 5, 11, 43, 55, 215, 473, 2365.