357

357 = 3 × 7 × 17

357 = 1² × 3 + 4 + 5 + 6 × 7 × 8 + 9

357 = 98 + 76 + 54 × 3 + 21

357 = 0^4 + 1^6 + 2^8 − 3^9 + 4^7 + 5^5 + 6^3 + 7^2 + 8^1 + 9^0

a(n) = 3*n*(n + 3)/2. (n = 14)

Integer k such that 10^k+21 is prime.

Sphenic number: Product of 3 distinct Primes, (List)

Factors: 1, 3, 7, 17, 21, 51, 119, 357

Representations, Binary to Hexadecimal:

101100101_2
111020_3
11211_4
2412_5
1353_6
1020_7
545_8
436_9
2a5_11
259_12
216_13
1b7_14
18c_15
165_16

<--- --->