1243 = 1 × 2 × (3 + 4 × 56) + 789
1243 = (9 + 8 + 7 × 6) × 5 × 4 + 3 × 21
1243 = 0^3 − 1^8 + 2^6 − 3^9 + 4^7 + 5^5 + 6^4 + 7^2 + 8^1 + 9^0
1243 divides 98^4 - 1.
Number of knapsack partitions of 39
Toothpick sequence, n = 50
The ring of integers of the field Q(sqrt(-1243)) has class number 4.
Semiprime (Product of 2 Primes)
Factors: 1, 11, 113, 1243
One thousand, two hundred forty-three
Representations, Binary to Hexadecimal:
10011011011_2
1201001_3
103123_4
14433_5
5431_6
3424_7
2333_8
1631_9
a30_11
877_12
748_13
64b_14
57d_15
4db_16
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Undergraduate Texts in Mathematics
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