first A Prime number (or a prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself
so 1 isnt a prime
primes are 2 3 5 7 11 13 17 etc now by repeating digits if you mean the 1's in 11 then stop at 7 if you mean repeating a digit as in the tens spot of 11 and 13 stop at 11 and 3 and 13 are repating the 3 location....etc
1,023,456,789
9875.
For a single repeating digit, it is a dot over the digit.For string of repeating digits, it can be a dot over the first and last repeating digits, or a bar over the repeating string.
4/15 as a decimal is 0.26666 repeating
There are 3024 of them.
24
256
18, if leading 0s are disallowed.
Without repeating digits (not digets!) and without leading 0s, 600 of them.
98765
60
468, 486, 648, 684, 846, 864.
-58264
86420
It is a repeating decimal.
4 x 3 x 2 ie 24
5040