Table of Values of π2(10n)
n
Who?
1
2
2
8
3
35
4
205
5
1,224
6
8,169
7
58,980
8
440,312
9
3,424,506
10
27,412,679
11
224,376,048
Richard P. Brent (1976)
12
1,870,585,220
13
15,834,664,872
14
135,780,321,665
Thomas R. Nicely (1995),
Jörg Richstein (independently, 1996)
15
1,177,209,242,304
Thomas R. Nicely (2001),
confirmed by Pascal Sebah (2002)
16
10,304,195,697,298
17
90,948,839,353,159
Tomás Oliveira e Silva (2005)
18
808,675,888,577,436
Tomás Oliveira e Silva (2008)