8191 = 900 + 901 + 902 = 20 + 21 + 22 + 23 + ... + 211 + 212 = 213 - 1, Mersenne prime
Undergraduate Texts in Mathematics
Graduate Studies in Mathematics
8191 = 900 + 901 + 902 = 20 + 21 + 22 + 23 + ... + 211 + 212 = 213 - 1, Mersenne prime
Undergraduate Texts in Mathematics
Graduate Studies in Mathematics