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A218865 First of a run of 7 consecutive numbers with same prime signature. 1
440738966073, 464881210073, 645462662449, 914549532721, 932537185321, 936083045673, 1043710445721, 1091100709673, 1225660528209, 1349165568945, 1602377996921, 1682159750473, 1714275593649, 1730241245545, 1756186304521, 1872671302049, 1956516794721, 1987087485225 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(1) = A034173(7) = A218455(443) = A218455(444)-1.

a(19) > 2*10^12. - Donovan Johnson, May 11 2013

LINKS

Table of n, a(n) for n=1..18.

EXAMPLE

The 7 consecutive numbers from 645462662449 to 645462662455 all have a prime signature of 2,1,1,1.

CROSSREFS

Cf. A034173, A034174, A052213, A052214, A175590, A218448, A218455.

Sequence in context: A281963 A082411 A113952 * A289111 A209833 A255578

Adjacent sequences:  A218862 A218863 A218864 * A218866 A218867 A218868

KEYWORD

nonn

AUTHOR

Donovan Johnson, Nov 08 2012

EXTENSIONS

a(7)-a(18) from Donovan Johnson, May 11 2013

STATUS

approved

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Last modified January 29 16:58 EST 2020. Contains 331347 sequences. (Running on oeis4.)