A185120 Cut decimal expansion of e (A001113) into pieces that are primes, each prime being greater in length than the last.

2, 71, 8281828459045235360287471, 352662497757247093699959574966967627724076630353547594571382178525166427427466391932003059

Offset: 1

Author

N. J. A. Sloane, Feb 05 2012

Keywords

• nonn
• base

Comments

Feb 06 2012: Charles R Greathouse IV found the next few terms. He reports that the sequence starts 2, 71, 8281828459045235360287471, 352...3059 (90 digits), 9218...939 (456 digits), 239...6753 (608 digits), 985...8631 (1421 digits), 382...0327 (1469 digits). Since these terms are too large to display here, M. F. Hasler points out that we could add a sequence giving the starting place (in the decimal expansion of e) where the next prime begins.

If we omit the condition that the terms increase in length, the sequence begins 2, 7. The third term is the 649-digit number 18281...0429, found by Charles R Greathouse IV, Feb 06 2012.

Crossrefs

Cf. A001113, A073246, A104843.

A subsequence of A198188. - M. F. Hasler, Feb 05 2012

Extensions

a(4) from Ignacio Larrosa Cañestro, Feb 05 2012