830

830 = 2 x 5 x 83. It is the product of three distinct Sophie Germain primes (A157346).

830 is 1010202 in base 3. It is 434 in base 14.

830 is the sum of four consecutive primes (A034963): 830 = 197 + 199 + 211 + 223.

830 is the sum of 11 positive fifth powers (A003356).

830 incremented by the sum of its digits (8 + 3 + 0 = 11) produces a square (A066564): 830 + 11 = 841 = 29².

In the year 830 Persian mathematician Al-Khworizmi, working at the House of Wisdom in Baghdad, developed what came to be known as algebra in his work Hisab al-jabr w'al-muqabala.

Source: On-Line Encyclopedia of Integer Sequences