71 is a Prime Number, Prime(20)
712 = 7! + 1
71 = 1 × 2 + 34 + 5 + 6 + 7 + 8 + 9
71 = 9 + 8 + 7 + 6 + 5 + 4 + 32 × 1
71 = 0^9 − 1^0 − 2^6 + 3^8 − 4^7 + 5^5 + 6^3 + 7^2 + 8^1 + 9^4
71 = sqrt(7! + 1)
Prime of the form k^2 + k + 41
Emirp , 71 is also Prime
71 cannot be written as a sum of 3 squares. (Integers that are not a sum of three squares)
The ring of integers of the field Q(sqrt(-71)) has class number 7.
Factors: 1, 71
Seventy-one
Representations, Binary to Hexadecimal:
1000111_2
2122_3
1013_4
241_5
155_6
131_7
107_8
78_9
65_11
5b_12
56_13
51_14
4b_15
47_16
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Undergraduate Texts in Mathematics
Graduate Studies in Mathematics
