λ
Sequence Observatory

6,691,610

2 × 5 × 19 × 41 × 859
Deficient Even Composite

Starting at 6,691,610, the Collatz iteration reaches 1 after 116 steps. The first transition is 3345805; the starting value is even with 32 positive divisors.

Prime Factor Structure

Factorization String 2 × 5 × 19 × 41 × 859
Distinct Prime Factors 5
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 32
Divisor Sum (σ) 13,003,200
Proper Divisor Sum 6,311,590
Digit Sum / Digital Root 29 (Root: 2)
Adjacent Primes #6691577 ← → #6691613

Radix Representation

Decimal 6691610
Binary 11001100001101100011010 (23 bits)
Octal 0o31415432
Hexadecimal 0x661B1A

Divisor Catalog (32)

1 2 5 10 19 38 41 82 95 190 205 410 779 859 1,558 1,718 3,895 4,295 7,790 8,590 16,321 32,642 35,219 70,438 81,605 163,210 176,095 352,190 669,161 1,338,322 3,345,805 6,691,610

Collatz Trajectory (116 steps to reach 1)

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

6,691,610 3,345,805 10,037,416 5,018,708 2,509,354 1,254,677 3,764,032 1,882,016 941,008 470,504 235,252 117,626 58,813 176,440 88,220 44,110 22,055 66,166 33,083 99,250 49,625 148,876 74,438 37,219 111,658 55,829 167,488 83,744 41,872 20,936 10,468 5,234 2,617 7,852 3,926 1,963 5,890 2,945 8,836 4,418 2,209 6,628 3,314 1,657 4,972 2,486 1,243 3,730 1,865 5,596 2,798 1,399 4,198 2,099 6,298 3,149 9,448 4,724 2,362 1,181

More profiles

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