Of the numbers you listed only 47 is a prime number.
49
40, 42, 44, 45, 46, 48, 49
42, 44, 45, 46, 48, 49.
49C6 = 49!/[(49 - 6)!6!] = 49!/(43!6!) = (49*48*47*46*45*44*43!)/(43!*6*5*4*3*2*1) = 49*47*46*3*44 = 13,983,816 or 49C6 = 49*48*47*46*45*44/6*5*4*3*2*1 = 13,983,816
Of the numbers you listed only 47 is a prime number.
47
Forty-one, the two forty-threes and forty-seven are prime.
46, 47, 48, 49, 50 and so on. The list is infinite
49
42 and 48
48
40, 42, 44, 45, 46, 48, 49
42, 44, 45, 46, 48, 49.
49C6 = 49!/[(49 - 6)!6!] = 49!/(43!6!) = (49*48*47*46*45*44*43!)/(43!*6*5*4*3*2*1) = 49*47*46*3*44 = 13,983,816 or 49C6 = 49*48*47*46*45*44/6*5*4*3*2*1 = 13,983,816
49 is not a prime number. It is the square of the prime number 7.
40, 42, 44, 45, 46, 48, 49, 50