169
49 has exactly 3 factors (1, 7, and 49) and is greater than 40 and less than 60.
No. They have different number of factors
30
That's a prime number.
169
Prime Number
A prime number !
a prime number
Any composite number will do. No primes!
composite number! ;)
a prime number
49 has exactly 3 factors (1, 7, and 49) and is greater than 40 and less than 60.
No. They have different number of factors
30
510510
Any composite number. Examples: 4 and 9 . . . (three factors) 6, 8, and 10 . . . (four factors) 12 . . . (six factors) 60 . . . (twelve factors)