1390 = 12 + 34 + 56 × (7 + 8 + 9)
1390 = 9 × 8 + 7 + 6 × 5 × 43 + 21
1390 = 0^4 + 1^9 + 2^7 − 3^8 + 4^6 + 5^5 + 6^0 + 7^1 + 8^3 + 9^2
1390 divides 43^12 - 1.
Sphenic number: Product of 3 distinct Primes, (List)
Factors: 1, 2, 5, 10, 139, 278, 695, 1390
One thousand, three hundred ninety
Representations, Binary to Hexadecimal:
10101101110_2
1220111_3
111232_4
21030_5
10234_6
4024_7
2556_8
1814_9
1054_11
97a_12
82c_13
714_14
62a_15
56e_16
<--- --->
Undergraduate Texts in Mathematics
Graduate Studies in Mathematics
