λ
Sequence Observatory

7,938,915

3 × 5 × 17 × 163 × 191
Deficient Odd Composite

Starting at 7,938,915, the Collatz iteration reaches 1 after 186 steps. The first transition is 23816746; the starting value is odd with 32 positive divisors.

Prime Factor Structure

Factorization String 3 × 5 × 17 × 163 × 191
Distinct Prime Factors 5
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 32
Divisor Sum (σ) 13,602,816
Proper Divisor Sum 5,663,901
Digit Sum / Digital Root 42 (Root: 6)
Adjacent Primes #7938907 ← → #7938919

Radix Representation

Decimal 7938915
Binary 11110010010001101100011 (23 bits)
Octal 0o36221543
Hexadecimal 0x792363

Divisor Catalog (32)

1 3 5 15 17 51 85 163 191 255 489 573 815 955 2,445 2,771 2,865 3,247 8,313 9,741 13,855 16,235 31,133 41,565 48,705 93,399 155,665 466,995 529,261 1,587,783 2,646,305 7,938,915

Collatz Trajectory (186 steps to reach 1)

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

7,938,915 23,816,746 11,908,373 35,725,120 17,862,560 8,931,280 4,465,640 2,232,820 1,116,410 558,205 1,674,616 837,308 418,654 209,327 627,982 313,991 941,974 470,987 1,412,962 706,481 2,119,444 1,059,722 529,861 1,589,584 794,792 397,396 198,698 99,349 298,048 149,024 74,512 37,256 18,628 9,314 4,657 13,972 6,986 3,493 10,480 5,240 2,620 1,310 655 1,966 983 2,950 1,475 4,426 2,213 6,640 3,320 1,660 830 415 1,246 623 1,870 935 2,806 1,403

More profiles

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