λ
Sequence Observatory

4,456,515

3 × 5 × 7 × 42443
Deficient Odd Composite

Starting at 4,456,515, the Collatz iteration reaches 1 after 87 steps. The first transition is 13369546; the starting value is odd with 16 positive divisors.

Prime Factor Structure

Factorization String 3 × 5 × 7 × 42443
Distinct Prime Factors 4
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 16
Divisor Sum (σ) 8,149,248
Proper Divisor Sum 3,692,733
Digit Sum / Digital Root 30 (Root: 3)
Adjacent Primes #4456513 ← → #4456541

Radix Representation

Decimal 4456515
Binary 10001000000000001000011 (23 bits)
Octal 0o21000103
Hexadecimal 0x440043

Divisor Catalog (16)

1 3 5 7 15 21 35 105 42,443 127,329 212,215 297,101 636,645 891,303 1,485,505 4,456,515

Collatz Trajectory (87 steps to reach 1)

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

4,456,515 13,369,546 6,684,773 20,054,320 10,027,160 5,013,580 2,506,790 1,253,395 3,760,186 1,880,093 5,640,280 2,820,140 1,410,070 705,035 2,115,106 1,057,553 3,172,660 1,586,330 793,165 2,379,496 1,189,748 594,874 297,437 892,312 446,156 223,078 111,539 334,618 167,309 501,928 250,964 125,482 62,741 188,224 94,112 47,056 23,528 11,764 5,882 2,941 8,824 4,412 2,206 1,103 3,310 1,655 4,966 2,483 7,450 3,725 11,176 5,588 2,794 1,397 4,192 2,096 1,048 524 262 131

More profiles

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