2155 = (12 + 345) × 6 + 7 + 8 × 9
2155 = 9 + 8 × (7 + 6 × 5) + 432 + 1
2155 = 0^7 + 1^8 − 2^9 + 3^6 + 4^5 + 5^4 + 6^3 + 7^1 + 8^2 + 9^0
2155 divides 26^10 - 1.
Semiprime (Product of 2 Primes)
Factors: 1, 5, 431, 2155
Two thousand, one hundred fifty-five
100001101011_2
2221211_3
201223_4
32110_5
13551_6
6166_7
4153_8
2854_9
168a_11
12b7_12
c9a_13
add_14
98a_15
86b_16
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Undergraduate Texts in Mathematics
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