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A137574 Fibonacci numbers and their distinct prime divisors having the same number of decimal digits. +0
1
2, 3, 5, 8, 13, 21, 89, 233, 1597, 17711, 28657, 46368, 75025, 121393, 514229, 1346269, 165580141, 433494437, 2971215073, 53316291173 (list; graph; listen)
OFFSET

1,1

COMMENT

The Fibonacci primes are part of this sequence.

Fibonacci numbers which are semiprimes are also part of the sequence.

LINKS

Ron Knott, Fibonacci Numbers and their prime divisors.

EXAMPLE

The Fibonacci number 53316291173 and its prime divisors 953 and 55945741 have exactly the same number of decimal digits.

CROSSREFS

Cf. A000045, A053409.

Sequence in context: A014260 A067517 A042339 this_sequence A041247 A117770 A053412

Adjacent sequences: A137571 A137572 A137573 this_sequence A137575 A137576 A137577

KEYWORD

nonn,base

AUTHOR

Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Apr 25 2008

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Last modified December 3 01:16 EST 2008. Contains 151161 sequences.


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