Shakuntala Devi. Hindistanlı bir kadın. İnsan bilgisayar diye biliniyor.
California Üniversitesinde 61,629,875'in küp kökünü ve 170,859,375'in yedinci dereceden kökünü kafadan hesaplamış. 395 ve 15'i bulmuş.

1977'de 201 haneli bir rakamın 23.dereceden kökünü 50 saniyede hesaplamış. Cevabı 546,372,891, o zaman UNIVAC 1101 bilgisayarı üzerinde yazılmış bir programla bu doğrulanmış.
1980'de iki adet 13 haneli sayıyı 28 saniyede çarpmış.
7,686,369,774,870 × 2,465,099,745,779 = 18,947,668,177,995,426,462,773,730.
2013'te ölmüş. 2014'te Google yaş gününde anısına o gün doodle çıkarmış. (Hani şu google logosunda günün anlam ve önemine binaen yapılan değişiklik.)
(University Of California,Berkeley )Examples of the problems presented to Devi included calculating the cube root of 61,629,875 and the seventh root of 170,859,375.[3][4] Jensen reported that Devi provided the solution to the above mentioned problems (395 and 15, respectively) before Jensen could copy them down in his notebook.[3][4] Jensen published his findings in the academic journal Intelligence in 1990.[3][4]
In 1977, at Southern Methodist University, she gave the 23rd root of a 201-digit number in 50 seconds.[1][4] Her answer—546,372,891—was confirmed by calculations done at the US Bureau of Standards by the UNIVAC 1101 computer, for which a special program had to be written to perform such a large calculation.[10]
On 18 June 1980, she demonstrated the multiplication of two 13-digit numbers—7,686,369,774,870 × 2,465,099,745,779—picked at random by the Computer Department of Imperial College London. She correctly answered 18,947,668,177,995,426,462,773,730 in 28 seconds.[2][3] This event was recorded in the 1982 Guinness Book of Records.[2][3] Writer Steven Smith said, "the result is so far superior to anything previously reported that it can only be described as unbelievable".[10]