243 = 12 × 3 + 4 × 5 × 6 + 78 + 9
243 = 98 + 76 + 5 + 43 + 21
243 = 0^5 + 1^9 + 2^8 + 3^7 − 4^6 + 5^1 + 6^4 + 7^0 + 8^3 + 9^2
243 = 3^5
243 divides 82^3 - 1.
243 = (1 + 1) × 11(1+1) + 1
243 = (222 + 2)/2
243 = 3 × 3 × 33
243 = (4 − 4/4)(4+4/4)
243 = (5 − (5 + 5)/5)5
243 = (6 × 6/(6 + 6))(6 − 6/6)
243 = 7 × (7 × 7 − 7 − 7) − (7 + 7)/7
243 = ((8 + 8 + 8)/8)(8−(8+8+8)/8)
243 = 9 × (9 + 9 + 9)
\( 1/243 = 0.\overline{004115226337448559670781893} \) (period 27)
Smallest of 3 consecutive numbers each divisible by a square.
Number k such that k^2 + 2 is prime
Number k such that 3^k + 2 is prime
Number n which is the sum of 3 nonzero 4th powers
Number of fractions in Farey series of order 28 : 0/1, 1/28, 1/27, 1/26, 1/25, 1/24, 1/23, 1/22, 1/21, 1/20, 1/19, 1/18, 1/17, 1/16, 1/15, 1/14, 2/27, 1/13, 2/25, 1/12, 2/23, 1/11, 2/21, 1/10, 2/19, 3/28, 1/9, 3/26, 2/17, 3/25, 1/8, 3/23, 2/15, 3/22, 1/7, 4/27, 3/20, 2/13, 3/19, 4/25, 1/6, 4/23, 3/17, 5/28, 2/11, 5/27, 3/16, 4/21, 5/26, 1/5, 5/24, 4/19, 3/14, 5/23, 2/9, 5/22, 3/13, 4/17, 5/21, 6/25, 1/4, 7/27, 6/23, 5/19, 4/15, 7/26, 3/11, 5/18, 7/25, 2/7, 7/24, 5/17, 8/27, 3/10, 7/23, 4/13, 5/16, 6/19, 7/22, 8/25, 9/28, 1/3, 9/26, 8/23, 7/20, 6/17, 5/14, 9/25, 4/11, 7/19, 10/27, 3/8, 8/21, 5/13, 7/18, 9/23, 11/28, 2/5, 11/27, 9/22, 7/17, 5/12, 8/19, 11/26, 3/7, 10/23, 7/16, 11/25, 4/9, 9/20, 5/11, 11/24, 6/13, 13/28, 7/15, 8/17, 9/19, 10/21, 11/23, 12/25, 13/27, 1/2, 14/27, 13/25, 12/23, 11/21, 10/19, 9/17, 8/15, 15/28, 7/13, 13/24, 6/11, 11/20, 5/9, 14/25, 9/16, 13/23, 4/7, 15/26, 11/19, 7/12, 10/17, 13/22, 16/27, 3/5, 17/28, 14/23, 11/18, 8/13, 13/21, 5/8, 17/27, 12/19, 7/11, 16/25, 9/14, 11/17, 13/20, 15/23, 17/26, 2/3, 19/28, 17/25, 15/22, 13/19, 11/16, 9/13, 16/23, 7/10, 19/27, 12/17, 17/24, 5/7, 18/25, 13/18, 8/11, 19/26, 11/15, 14/19, 17/23, 20/27, 3/4, 19/25, 16/21, 13/17, 10/13, 17/22, 7/9, 18/23, 11/14, 15/19, 19/24, 4/5, 21/26, 17/21, 13/16, 22/27, 9/11, 23/28, 14/17, 19/23, 5/6, 21/25, 16/19, 11/13, 17/20, 23/27, 6/7, 19/22, 13/15, 20/23, 7/8, 22/25, 15/17, 23/26, 8/9, 25/28, 17/19, 9/10, 19/21, 10/11, 21/23, 11/12, 23/25, 12/13, 25/27, 13/14, 14/15, 15/16, 16/17, 17/18, 18/19, 19/20, 20/21, 21/22, 22/23, 23/24, 24/25, 25/26, 26/27, 27/28, 1/1
Two hundred forty-three
Representations, Binary to Hexadecimal:
11110011_2
100000_3
3303_4
1433_5
1043_6
465_7
363_8
300_9
201_11
183_12
159_13
135_14
113_15
f3_16
<--- --->
Undergraduate Texts in Mathematics
Graduate Studies in Mathematics
