301
When a number is a multiple of seven it is also divisible by seven.
510 is not divisible by seven.
The smallest number divisible by eight seven and five is 280.
Seven
There is an infinite number of numbers that are not divisible by seven!
. . . it is a multiple of seven.
Seven and 153.
1,330,560
510510
All multiples of 67, which is an infinite number.
Seven
Forty-nine is not a Prime number because it is also divisible by seven. Prime numbers are only divisible by one and themselves.