2705 = 12 + 345 × 6 + 7 × 89
2705 = 9 + 87 × 6 × 5 + 43 × 2 × 1
2705 = 0^7 + 1^8 + 2^9 − 3^6 + 4^5 + 5^0 + 6^4 + 7^1 + 8^3 + 9^2
2705 = 1^2 + 52^2 = 32^2 + 41^2
2705 divides 52^4 - 1.
a(n) is the smallest semiprime such that difference between a(n) and next semiprime, b(n), is n, n = 16
Semiprime (Product of 2 Primes)
Factors: 1, 5, 541, 2705
Representations, Binary to Hexadecimal:
101010010001_2
10201012_3
222101_4
41310_5
20305_6
10613_7
5221_8
3635_9
203a_11
1695_12
1301_13
db3_14
c05_15
a91_16
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Undergraduate Texts in Mathematics
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