1385 = (1 + 2 + 3)4 + 5 + 67 + 8 + 9
1385 = 9 × 8 + 76 × (5 + 4 × 3) + 21
1385 = 0^2 − 1^6 − 2^8 − 3^9 + 4^7 + 5^5 + 6^4 + 7^1 + 8^3 + 9^0
1385 = 4^2 + 37^2 = 19^2 + 32^2
1385^2 = 296^2 + 1353^2 = 663^2 + 1216^2
1385 divides 16^23 - 1.
1385 is the 8th Euler number
Semiprime (Product of 2 Primes)
Number k such that k, k+2, k+4, k+6, k+8 are semiprimes.
Factors: 1, 5, 277, 1385
One thousand, three hundred eighty-five
Representations, Binary to Hexadecimal:
10101101001_2
1220022_3
111221_4
21020_5
10225_6
4016_7
2551_8
1808_9
104a_11
975_12
827_13
70d_14
625_15
569_16
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