λ
Sequence Observatory

6,581,902

2 × 127 × 25913
Deficient Even Composite

Starting at 6,581,902, the Collatz iteration reaches 1 after 116 steps. The first transition is 3290951; the starting value is even with 8 positive divisors.

Prime Factor Structure

Factorization String 2 × 127 × 25913
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 9,950,976
Proper Divisor Sum 3,369,074
Digit Sum / Digital Root 31 (Root: 4)
Adjacent Primes #6581857 ← → #6581909

Radix Representation

Decimal 6581902
Binary 11001000110111010001110 (23 bits)
Octal 0o31067216
Hexadecimal 0x646E8E

Divisor Catalog (8)

1 2 127 254 25,913 51,826 3,290,951 6,581,902

Collatz Trajectory (116 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

6,581,902 3,290,951 9,872,854 4,936,427 14,809,282 7,404,641 22,213,924 11,106,962 5,553,481 16,660,444 8,330,222 4,165,111 12,495,334 6,247,667 18,743,002 9,371,501 28,114,504 14,057,252 7,028,626 3,514,313 10,542,940 5,271,470 2,635,735 7,907,206 3,953,603 11,860,810 5,930,405 17,791,216 8,895,608 4,447,804 2,223,902 1,111,951 3,335,854 1,667,927 5,003,782 2,501,891 7,505,674 3,752,837 11,258,512 5,629,256 2,814,628 1,407,314 703,657 2,110,972 1,055,486 527,743 1,583,230 791,615 2,374,846 1,187,423 3,562,270 1,781,135 5,343,406 2,671,703 8,015,110 4,007,555 12,022,666 6,011,333 18,034,000 9,017,000

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