1,847,991

3 × 615997

Starting at 1,847,991, the Collatz iteration reaches 1 after 171 steps. The first transition is 5543974; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 3 × 615997

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 2,463,992

Proper Divisor Sum 616,001

Digit Sum / Digital Root 39 (Root: 3)

Adjacent Primes #1847983 ← → #1847999

Radix Representation

Decimal	1847991
Binary	111000011001010110111 (21 bits)
Octal	0o7031267
Hexadecimal	0x1C32B7

Divisor Catalog (4)

1 3 615,997 1,847,991

Collatz Trajectory (171 steps to reach 1)

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

1,847,991 5,543,974 2,771,987 8,315,962 4,157,981 12,473,944 6,236,972 3,118,486 1,559,243 4,677,730 2,338,865 7,016,596 3,508,298 1,754,149 5,262,448 2,631,224 1,315,612 657,806 328,903 986,710 493,355 1,480,066 740,033 2,220,100 1,110,050 555,025 1,665,076 832,538 416,269 1,248,808 624,404 312,202 156,101 468,304 234,152 117,076 58,538 29,269 87,808 43,904 21,952 10,976 5,488 2,744 1,372 686 343 1,030 515 1,546 773 2,320 1,160 580 290 145 436 218 109 328

← Previous Integer #1,847,990 Browse Full Index Next Integer #1,847,992 →