is 57 a prime number and why? explain your reasoning.
2007-09-25 08:54:20 · 7 answers · asked by hot_rod2k 1 in Science & Mathematics ➔ Mathematics
57 is not a prime number. It is divisible by 3.
(19 X 3 = 57).
2007-09-25 08:58:33 · answer #1 · answered by radrian2004 3 · 0⤊ 0⤋
No, 57 is not a prime number.
Prime numbers are only divisible by 1 and itself (ex 11 - 1 and 11). 57 is also divisible by 3 and 19.
2007-09-25 09:00:53 · answer #2 · answered by mcfly21 2 · 0⤊ 0⤋
No. 3 * 19 = 57 so it's a composite.
A prime number is a number which has only itself and 1 as propr divisors. Numbers such as 19, 41, etc.
Doug
2007-09-25 09:01:34 · answer #3 · answered by doug_donaghue 7 · 0⤊ 0⤋
No, because it can be divided by 3 (3x19=57)
A prime number can be divided, without a remainder, only by itself and by 1. For example, 17 can be divided only by 17 and by 1.
2007-09-25 09:02:36 · answer #4 · answered by Jenny 3 · 0⤊ 0⤋
No
Prime numbers are only divisible by 1
57 = 3 x 19
2007-09-25 08:59:31 · answer #5 · answered by Anonymous · 0⤊ 0⤋
No composite prime numbers is one and itself
2014-11-05 12:26:15 · answer #6 · answered by Anonymous · 1⤊ 0⤋
no 19x3 is 57
2007-09-25 08:59:20 · answer #7 · answered by Anonymous · 0⤊ 0⤋