What numbers N are the sum of a sequence of consecutive primes such that the product of the first and last numbers in the sequence is N?
No wonder the computer searches ended at 371.
OEIS has two related sequences: Neither is exactly what we seek. Read later comments to see which number below is the next number in our sequence.
A055233 Composite numbers equal to the sum of the primes from their smallest prime factor to their largest prime factor.
10, 39, 155, 371, 2935561623745, 454539357304421
A055514 Composite numbers that are the sum of a string of consecutive prime numbers and are divisible by the first and last primes.
10, 39, 155, 371, 10225245560, 2935561623745, 454539357304421, 7228559051256366318, 1390718713078158117206
Edited on July 6, 2018, 9:32 am
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Posted by Jer
on 2018-07-05 10:10:05 |
The sequence
