7
1 x 7, 7 x 1
How about the prime numbers of: 3+7 = 10
The numbers 7, 2 & 0 make 720.---8,9 and 10 ! 8 x 9 x 10 = 7
How about 7 times 7 = 49 as one example
5, 7 and 7
' 7 ' and ' 1 '.
49 = 7 x 7 and 7 is prime
7 is a prime number; its only prime factor is 7.
15.
2 x 7 x 7 x 7 x 7
2 x 7 x 7