401

401 is a Prime Number, Prime(79)

401 = 1 × 2 × 3 × 45 + 6 × 7 + 89

401 = 9 + 8 × 7 + 6 + 5 + 4 + 321

401 = 0^6 + 1^8 + 2^4 − 3^9 + 4^7 + 5^5 + 6^2 + 7^0 + 8^3 + 9^1

401 = 1^2 + 20^2

401^2 = 40^2 + 399^2

401 divides 20^4 - 1.

401 = ((1 + 1) × (11 − 1))⁽¹⁺¹⁾ + 1

401 = (22 − 2)² + 2/2

401 = 33 × (3 × 3 + 3) + 3 + 3 − 3/3

401 = 444 − 44 + 4/4

401 = 5 × (5 × 5 + 55) + 5/5

401 = 6 × 66 + 6 − 6/6

401 = 7 × (7 × 7 + 7) + (7 + 7)/7 + 7

401 = 8 × 8 × 8 − 888/8

401 = ((9 + 9)/9)⁹ − 999/9

Prime of the form x^2 + xy + 2y^2, with × and y nonnegative

Smallest prime p(k) such that the number of distinct prime divisors of all composite numbers between p(k) and p(k+1) is n.

Prime that is the sum of 9 consecutive primes.

Factors: 1, 401

Four hundred one

Representations, Binary to Hexadecimal:

10010001_2
112212_3
12101_4
3101_5
1505_6
1112_7
621_8
485_9
335_11
295_12
24b_13
209_14
1bb_15
191_16

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