1229

1229 is a Prime Number, Prime(201)

1229 = 1 × 234 × 5 + 6 × 7 + 8 + 9

1229 = 987 + 6 + 5 × 43 + 21

1229 = 0^6 + 1^9 − 2^8 − 3^7 + 4^4 + 5^5 + 6^3 + 7^0 + 8^2 + 9^1

1229 = 2^2 + 35^2

1229^2 = 140^2 + 1221^2

Sophie Germain prime p (List): 2p+1 is also prime (2459)

1229 is an irregular prime, since it divides the numerator of the Bernoulli number B784.

Number of primes < 10^4

Factors: 1, 1229

One thousand, two hundred twenty-nine

Representations, Binary to Hexadecimal:

10011001101_2
1200112_3
103031_4
14404_5
5405_6
3404_7
2315_8
1615_9
a18_11
865_12
737_13
63b_14
56e_15
4cd_16

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