Английская Википедия:290 (number)

Материал из Онлайн справочника
Перейти к навигацииПерейти к поиску

Шаблон:Refimprove Шаблон:Hatnote Шаблон:Infobox number 290 (two hundred [and] ninety) is the natural number following 289 and preceding 291.

In mathematics

The product of three primes, 290 is a sphenic number, and the sum of four consecutive primes (67 + 71 + 73 + 79). The sum of the squares of the divisors of 17 is 290.

Not only is it a nontotient and a noncototient, it is also an untouchable number.

290 is the 16th member of the Mian–Chowla sequence; it can not be obtained as the sum of any two previous terms in the sequence.[1]

See also the Bhargava–Hanke 290 theorem.

Integers from 291 to 299

291

Шаблон:Main

292

Шаблон:Main

293

Шаблон:Main

294

Шаблон:Main

295

Шаблон:Main

296

Шаблон:Main

297

Шаблон:Main

298

Шаблон:Main

299

Шаблон:Main

References

Шаблон:Reflist Шаблон:Integers